12895280

素因数分解:

$2^4\times 5^1\times {\mathrm{359}}^1\times {\mathrm{449}}^1$

素因数の和:821

約数の個数: 40

約数和(自身を含む): 30132000

約数和(自身を除く): 17236720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 359, 449, 718, 898, 1436, 1795, 1796, 2245, 2872, 3590, 3592, 4490, 5744, 7180, 7184, 8980, 14360, 17960, 28720, 35920, 161191, 322382, 644764, 805955, 1289528, 1611910, 2579056, 3223820, 6447640, 12895280]

約数ペア:

[(1, 12895280), (2, 6447640), (4, 3223820), (5, 2579056), (8, 1611910), (10, 1289528), (16, 805955), (20, 644764), (40, 322382), (80, 161191), (359, 35920), (449, 28720), (718, 17960), (898, 14360), (1436, 8980), (1795, 7184), (1796, 7180), (2245, 5744), (2872, 4490), (3590, 3592)]