81955720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:140

約数の個数: 192

約数和(自身を含む): 241315200

約数和(自身を除く): 159359480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 41, 44, 55, 56, 59, 70, 77, 82, 88, 110, 118, 121, 140, 154, 164, 205, 220, 236, 242, 280, 287, 295, 308, 328, 385, 410, 413, 440, 451, 472, 484, 574, 590, 605, 616, 649, 770, 820, 826, 847, 902, 968, 1148, 1180, 1210, 1298, 1435, 1540, 1640, 1652, 1694, 1804, 2065, 2255, 2296, 2360, 2419, 2420, 2596, 2870, 3080, 3157, 3245, 3304, 3388, 3608, 4130, 4235, 4510, 4543, 4838, 4840, 4961, 5192, 5740, 6314, 6490, 6776, 7139, 8260, 8470, 9020, 9086, 9676, 9922, 11480, 12095, 12628, 12980, 14278, 15785, 16520, 16933, 16940, 18040, 18172, 19352, 19844, 22715, 24190, 24805, 25256, 25960, 26609, 28556, 31570, 33866, 33880, 34727, 35695, 36344, 39688, 45430, 48380, 49610, 49973, 53218, 57112, 63140, 67732, 69454, 71390, 84665, 90860, 96760, 99220, 99946, 106436, 126280, 133045, 135464, 138908, 142780, 169330, 173635, 181720, 186263, 198440, 199892, 212872, 249865, 266090, 277816, 285560, 292699, 338660, 347270, 372526, 399784, 499730, 532180, 585398, 677320, 694540, 745052, 931315, 999460, 1064360, 1170796, 1389080, 1463495, 1490104, 1862630, 1998920, 2048893, 2341592, 2926990, 3725260, 4097786, 5853980, 7450520, 8195572, 10244465, 11707960, 16391144, 20488930, 40977860, 81955720]

約数ペア:

[(1, 81955720), (2, 40977860), (4, 20488930), (5, 16391144), (7, 11707960), (8, 10244465), (10, 8195572), (11, 7450520), (14, 5853980), (20, 4097786), (22, 3725260), (28, 2926990), (35, 2341592), (40, 2048893), (41, 1998920), (44, 1862630), (55, 1490104), (56, 1463495), (59, 1389080), (70, 1170796), (77, 1064360), (82, 999460), (88, 931315), (110, 745052), (118, 694540), (121, 677320), (140, 585398), (154, 532180), (164, 499730), (205, 399784), (220, 372526), (236, 347270), (242, 338660), (280, 292699), (287, 285560), (295, 277816), (308, 266090), (328, 249865), (385, 212872), (410, 199892), (413, 198440), (440, 186263), (451, 181720), (472, 173635), (484, 169330), (574, 142780), (590, 138908), (605, 135464), (616, 133045), (649, 126280), (770, 106436), (820, 99946), (826, 99220), (847, 96760), (902, 90860), (968, 84665), (1148, 71390), (1180, 69454), (1210, 67732), (1298, 63140), (1435, 57112), (1540, 53218), (1640, 49973), (1652, 49610), (1694, 48380), (1804, 45430), (2065, 39688), (2255, 36344), (2296, 35695), (2360, 34727), (2419, 33880), (2420, 33866), (2596, 31570), (2870, 28556), (3080, 26609), (3157, 25960), (3245, 25256), (3304, 24805), (3388, 24190), (3608, 22715), (4130, 19844), (4235, 19352), (4510, 18172), (4543, 18040), (4838, 16940), (4840, 16933), (4961, 16520), (5192, 15785), (5740, 14278), (6314, 12980), (6490, 12628), (6776, 12095), (7139, 11480), (8260, 9922), (8470, 9676), (9020, 9086)]