661405360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:312

約数の個数: 240

約数和(自身を含む): 1985372928

約数和(自身を除く): 1323967568

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 43, 44, 55, 56, 70, 77, 80, 86, 88, 110, 112, 121, 140, 154, 172, 176, 215, 220, 227, 242, 280, 301, 308, 344, 385, 430, 440, 454, 473, 484, 560, 602, 605, 616, 688, 770, 847, 860, 880, 908, 946, 968, 1135, 1204, 1210, 1232, 1505, 1540, 1589, 1694, 1720, 1816, 1892, 1936, 2270, 2365, 2408, 2420, 2497, 3010, 3080, 3178, 3311, 3388, 3440, 3632, 3784, 4235, 4540, 4730, 4816, 4840, 4994, 5203, 6020, 6160, 6356, 6622, 6776, 7568, 7945, 8470, 9080, 9460, 9680, 9761, 9988, 10406, 12040, 12485, 12712, 13244, 13552, 15890, 16555, 16940, 17479, 18160, 18920, 19522, 19976, 20812, 24080, 24970, 25424, 26015, 26488, 27467, 31780, 33110, 33880, 34958, 36421, 37840, 39044, 39952, 41624, 48805, 49940, 52030, 52976, 54934, 63560, 66220, 67760, 68327, 69916, 72842, 78088, 83248, 87395, 97610, 99880, 104060, 107371, 109868, 127120, 132440, 136654, 137335, 139832, 145684, 156176, 174790, 182105, 192269, 195220, 199760, 208120, 214742, 219736, 264880, 273308, 274670, 279664, 291368, 341635, 349580, 364210, 384538, 390440, 416240, 429484, 439472, 536855, 546616, 549340, 582736, 683270, 699160, 728420, 751597, 769076, 780880, 858968, 961345, 1073710, 1093232, 1098680, 1181081, 1366540, 1398320, 1456840, 1503194, 1538152, 1717936, 1922690, 2147420, 2197360, 2362162, 2733080, 2913680, 3006388, 3076304, 3757985, 3845380, 4294840, 4724324, 5466160, 5905405, 6012776, 7515970, 7690760, 8267567, 8589680, 9448648, 11810810, 12025552, 15031940, 15381520, 16535134, 18897296, 23621620, 30063880, 33070268, 41337835, 47243240, 60127760, 66140536, 82675670, 94486480, 132281072, 165351340, 330702680, 661405360]

約数ペア:

[(1, 661405360), (2, 330702680), (4, 165351340), (5, 132281072), (7, 94486480), (8, 82675670), (10, 66140536), (11, 60127760), (14, 47243240), (16, 41337835), (20, 33070268), (22, 30063880), (28, 23621620), (35, 18897296), (40, 16535134), (43, 15381520), (44, 15031940), (55, 12025552), (56, 11810810), (70, 9448648), (77, 8589680), (80, 8267567), (86, 7690760), (88, 7515970), (110, 6012776), (112, 5905405), (121, 5466160), (140, 4724324), (154, 4294840), (172, 3845380), (176, 3757985), (215, 3076304), (220, 3006388), (227, 2913680), (242, 2733080), (280, 2362162), (301, 2197360), (308, 2147420), (344, 1922690), (385, 1717936), (430, 1538152), (440, 1503194), (454, 1456840), (473, 1398320), (484, 1366540), (560, 1181081), (602, 1098680), (605, 1093232), (616, 1073710), (688, 961345), (770, 858968), (847, 780880), (860, 769076), (880, 751597), (908, 728420), (946, 699160), (968, 683270), (1135, 582736), (1204, 549340), (1210, 546616), (1232, 536855), (1505, 439472), (1540, 429484), (1589, 416240), (1694, 390440), (1720, 384538), (1816, 364210), (1892, 349580), (1936, 341635), (2270, 291368), (2365, 279664), (2408, 274670), (2420, 273308), (2497, 264880), (3010, 219736), (3080, 214742), (3178, 208120), (3311, 199760), (3388, 195220), (3440, 192269), (3632, 182105), (3784, 174790), (4235, 156176), (4540, 145684), (4730, 139832), (4816, 137335), (4840, 136654), (4994, 132440), (5203, 127120), (6020, 109868), (6160, 107371), (6356, 104060), (6622, 99880), (6776, 97610), (7568, 87395), (7945, 83248), (8470, 78088), (9080, 72842), (9460, 69916), (9680, 68327), (9761, 67760), (9988, 66220), (10406, 63560), (12040, 54934), (12485, 52976), (12712, 52030), (13244, 49940), (13552, 48805), (15890, 41624), (16555, 39952), (16940, 39044), (17479, 37840), (18160, 36421), (18920, 34958), (19522, 33880), (19976, 33110), (20812, 31780), (24080, 27467), (24970, 26488), (25424, 26015)]