28877960

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{2011}}^1$

素因数の和:2381

約数の個数: 32

約数和(自身を含む): 65188800

約数和(自身を除く): 36310840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 718, 1436, 1795, 2011, 2872, 3590, 4022, 7180, 8044, 10055, 14360, 16088, 20110, 40220, 80440, 721949, 1443898, 2887796, 3609745, 5775592, 7219490, 14438980, 28877960]

約数ペア:

[(1, 28877960), (2, 14438980), (4, 7219490), (5, 5775592), (8, 3609745), (10, 2887796), (20, 1443898), (40, 721949), (359, 80440), (718, 40220), (1436, 20110), (1795, 16088), (2011, 14360), (2872, 10055), (3590, 8044), (4022, 7180)]