21995325

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8887}}^1$

素因数の和:8914

約数の個数: 36

約数和(自身を含む): 42982368

約数和(自身を除く): 20987043

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8887, 26661, 44435, 79983, 97757, 133305, 222175, 293271, 399915, 488785, 666525, 879813, 1466355, 1999575, 2443925, 4399065, 7331775, 21995325]

約数ペア:

[(1, 21995325), (3, 7331775), (5, 4399065), (9, 2443925), (11, 1999575), (15, 1466355), (25, 879813), (33, 666525), (45, 488785), (55, 399915), (75, 293271), (99, 222175), (165, 133305), (225, 97757), (275, 79983), (495, 44435), (825, 26661), (2475, 8887)]