20724880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2141}}^1$

素因数の和:2176

約数の個数: 60

約数和(自身を含む): 52988796

約数和(自身を除く): 32263916

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2141, 2420, 4282, 4840, 8564, 9680, 10705, 17128, 21410, 23551, 34256, 42820, 47102, 85640, 94204, 117755, 171280, 188408, 235510, 259061, 376816, 471020, 518122, 942040, 1036244, 1295305, 1884080, 2072488, 2590610, 4144976, 5181220, 10362440, 20724880]

約数ペア:

[(1, 20724880), (2, 10362440), (4, 5181220), (5, 4144976), (8, 2590610), (10, 2072488), (11, 1884080), (16, 1295305), (20, 1036244), (22, 942040), (40, 518122), (44, 471020), (55, 376816), (80, 259061), (88, 235510), (110, 188408), (121, 171280), (176, 117755), (220, 94204), (242, 85640), (440, 47102), (484, 42820), (605, 34256), (880, 23551), (968, 21410), (1210, 17128), (1936, 10705), (2141, 9680), (2420, 8564), (4282, 4840)]