51581120

素因数分解:

$2^6\times 5^1\times {\mathrm{359}}^1\times {\mathrm{449}}^1$

素因数の和:825

約数の個数: 56

約数和(自身を含む): 123444000

約数和(自身を除く): 71862880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 359, 449, 718, 898, 1436, 1795, 1796, 2245, 2872, 3590, 3592, 4490, 5744, 7180, 7184, 8980, 11488, 14360, 14368, 17960, 22976, 28720, 28736, 35920, 57440, 71840, 114880, 143680, 161191, 322382, 644764, 805955, 1289528, 1611910, 2579056, 3223820, 5158112, 6447640, 10316224, 12895280, 25790560, 51581120]

約数ペア:

[(1, 51581120), (2, 25790560), (4, 12895280), (5, 10316224), (8, 6447640), (10, 5158112), (16, 3223820), (20, 2579056), (32, 1611910), (40, 1289528), (64, 805955), (80, 644764), (160, 322382), (320, 161191), (359, 143680), (449, 114880), (718, 71840), (898, 57440), (1436, 35920), (1795, 28736), (1796, 28720), (2245, 22976), (2872, 17960), (3590, 14368), (3592, 14360), (4490, 11488), (5744, 8980), (7180, 7184)]