20531280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{101}}^1$

素因数の和:146

約数の個数: 240

約数和(自身を含む): 80744832

約数和(自身を除く): 60213552

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 48, 55, 56, 60, 66, 70, 77, 80, 84, 88, 101, 105, 110, 112, 120, 121, 132, 140, 154, 165, 168, 176, 202, 210, 220, 231, 240, 242, 264, 280, 303, 308, 330, 336, 363, 385, 404, 420, 440, 462, 484, 505, 528, 560, 605, 606, 616, 660, 707, 726, 770, 808, 840, 847, 880, 924, 968, 1010, 1111, 1155, 1210, 1212, 1232, 1320, 1414, 1452, 1515, 1540, 1616, 1680, 1694, 1815, 1848, 1936, 2020, 2121, 2222, 2310, 2420, 2424, 2541, 2640, 2828, 2904, 3030, 3080, 3333, 3388, 3535, 3630, 3696, 4040, 4235, 4242, 4444, 4620, 4840, 4848, 5082, 5555, 5656, 5808, 6060, 6160, 6666, 6776, 7070, 7260, 7777, 8080, 8470, 8484, 8888, 9240, 9680, 10164, 10605, 11110, 11312, 12120, 12221, 12705, 13332, 13552, 14140, 14520, 15554, 16665, 16940, 16968, 17776, 18480, 20328, 21210, 22220, 23331, 24240, 24442, 25410, 26664, 28280, 29040, 31108, 33330, 33880, 33936, 36663, 38885, 40656, 42420, 44440, 46662, 48884, 50820, 53328, 56560, 61105, 62216, 66660, 67760, 73326, 77770, 84840, 85547, 88880, 93324, 97768, 101640, 116655, 122210, 124432, 133320, 146652, 155540, 169680, 171094, 183315, 186648, 195536, 203280, 233310, 244420, 256641, 266640, 293304, 311080, 342188, 366630, 373296, 427735, 466620, 488840, 513282, 586608, 622160, 684376, 733260, 855470, 933240, 977680, 1026564, 1283205, 1368752, 1466520, 1710940, 1866480, 2053128, 2566410, 2933040, 3421880, 4106256, 5132820, 6843760, 10265640, 20531280]

約数ペア:

[(1, 20531280), (2, 10265640), (3, 6843760), (4, 5132820), (5, 4106256), (6, 3421880), (7, 2933040), (8, 2566410), (10, 2053128), (11, 1866480), (12, 1710940), (14, 1466520), (15, 1368752), (16, 1283205), (20, 1026564), (21, 977680), (22, 933240), (24, 855470), (28, 733260), (30, 684376), (33, 622160), (35, 586608), (40, 513282), (42, 488840), (44, 466620), (48, 427735), (55, 373296), (56, 366630), (60, 342188), (66, 311080), (70, 293304), (77, 266640), (80, 256641), (84, 244420), (88, 233310), (101, 203280), (105, 195536), (110, 186648), (112, 183315), (120, 171094), (121, 169680), (132, 155540), (140, 146652), (154, 133320), (165, 124432), (168, 122210), (176, 116655), (202, 101640), (210, 97768), (220, 93324), (231, 88880), (240, 85547), (242, 84840), (264, 77770), (280, 73326), (303, 67760), (308, 66660), (330, 62216), (336, 61105), (363, 56560), (385, 53328), (404, 50820), (420, 48884), (440, 46662), (462, 44440), (484, 42420), (505, 40656), (528, 38885), (560, 36663), (605, 33936), (606, 33880), (616, 33330), (660, 31108), (707, 29040), (726, 28280), (770, 26664), (808, 25410), (840, 24442), (847, 24240), (880, 23331), (924, 22220), (968, 21210), (1010, 20328), (1111, 18480), (1155, 17776), (1210, 16968), (1212, 16940), (1232, 16665), (1320, 15554), (1414, 14520), (1452, 14140), (1515, 13552), (1540, 13332), (1616, 12705), (1680, 12221), (1694, 12120), (1815, 11312), (1848, 11110), (1936, 10605), (2020, 10164), (2121, 9680), (2222, 9240), (2310, 8888), (2420, 8484), (2424, 8470), (2541, 8080), (2640, 7777), (2828, 7260), (2904, 7070), (3030, 6776), (3080, 6666), (3333, 6160), (3388, 6060), (3535, 5808), (3630, 5656), (3696, 5555), (4040, 5082), (4235, 4848), (4242, 4840), (4444, 4620)]