308702920

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{14813}}^1$

素因数の和:15345

約数の個数: 32

約数和(自身を含む): 695961720

約数和(自身を除く): 387258800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 1042, 2084, 2605, 4168, 5210, 10420, 14813, 20840, 29626, 59252, 74065, 118504, 148130, 296260, 592520, 7717573, 15435146, 30870292, 38587865, 61740584, 77175730, 154351460, 308702920]

約数ペア:

[(1, 308702920), (2, 154351460), (4, 77175730), (5, 61740584), (8, 38587865), (10, 30870292), (20, 15435146), (40, 7717573), (521, 592520), (1042, 296260), (2084, 148130), (2605, 118504), (4168, 74065), (5210, 59252), (10420, 29626), (14813, 20840)]