315920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{359}}^1$

素因数の和:383

約数の個数: 40

約数和(自身を含む): 803520

約数和(自身を除く): 487600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 359, 440, 718, 880, 1436, 1795, 2872, 3590, 3949, 5744, 7180, 7898, 14360, 15796, 19745, 28720, 31592, 39490, 63184, 78980, 157960, 315920]

約数ペア:

[(1, 315920), (2, 157960), (4, 78980), (5, 63184), (8, 39490), (10, 31592), (11, 28720), (16, 19745), (20, 15796), (22, 14360), (40, 7898), (44, 7180), (55, 5744), (80, 3949), (88, 3590), (110, 2872), (176, 1795), (220, 1436), (359, 880), (440, 718)]