25278920

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1213}}^1$

素因数の和:1745

約数の個数: 32

約数和(自身を含む): 57033720

約数和(自身を除く): 31754800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 1042, 1213, 2084, 2426, 2605, 4168, 4852, 5210, 6065, 9704, 10420, 12130, 20840, 24260, 48520, 631973, 1263946, 2527892, 3159865, 5055784, 6319730, 12639460, 25278920]

約数ペア:

[(1, 25278920), (2, 12639460), (4, 6319730), (5, 5055784), (8, 3159865), (10, 2527892), (20, 1263946), (40, 631973), (521, 48520), (1042, 24260), (1213, 20840), (2084, 12130), (2426, 10420), (2605, 9704), (4168, 6065), (4852, 5210)]