20591240

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{13913}}^1$

素因数の和:13961

約数の個数: 32

約数和(自身を含む): 47585880

約数和(自身を除く): 26994640

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 13913, 27826, 55652, 69565, 111304, 139130, 278260, 514781, 556520, 1029562, 2059124, 2573905, 4118248, 5147810, 10295620, 20591240]

約数ペア:

[(1, 20591240), (2, 10295620), (4, 5147810), (5, 4118248), (8, 2573905), (10, 2059124), (20, 1029562), (37, 556520), (40, 514781), (74, 278260), (148, 139130), (185, 111304), (296, 69565), (370, 55652), (740, 27826), (1480, 13913)]