20408027452

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{157}}^1\times {\mathrm{90019}}^1$

素因数の和:90218

約数の個数: 36

約数和(自身を含む): 37933167720

約数和(自身を除く): 17525140268

約数列:

[1, 2, 4, 19, 38, 76, 157, 314, 361, 628, 722, 1444, 2983, 5966, 11932, 56677, 90019, 113354, 180038, 226708, 360076, 1710361, 3420722, 6841444, 14132983, 28265966, 32496859, 56531932, 64993718, 129987436, 268526677, 537053354, 1074106708, 5102006863, 10204013726, 20408027452]

約数ペア:

[(1, 20408027452), (2, 10204013726), (4, 5102006863), (19, 1074106708), (38, 537053354), (76, 268526677), (157, 129987436), (314, 64993718), (361, 56531932), (628, 32496859), (722, 28265966), (1444, 14132983), (2983, 6841444), (5966, 3420722), (11932, 1710361), (56677, 360076), (90019, 226708), (113354, 180038)]