18900120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{659}}^1$

素因数の和:912

約数の個数: 64

約数和(自身を含む): 57024000

約数和(自身を除く): 38123880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 239, 478, 659, 717, 956, 1195, 1318, 1434, 1912, 1977, 2390, 2636, 2868, 3295, 3585, 3954, 4780, 5272, 5736, 6590, 7170, 7908, 9560, 9885, 13180, 14340, 15816, 19770, 26360, 28680, 39540, 79080, 157501, 315002, 472503, 630004, 787505, 945006, 1260008, 1575010, 1890012, 2362515, 3150020, 3780024, 4725030, 6300040, 9450060, 18900120]

約数ペア:

[(1, 18900120), (2, 9450060), (3, 6300040), (4, 4725030), (5, 3780024), (6, 3150020), (8, 2362515), (10, 1890012), (12, 1575010), (15, 1260008), (20, 945006), (24, 787505), (30, 630004), (40, 472503), (60, 315002), (120, 157501), (239, 79080), (478, 39540), (659, 28680), (717, 26360), (956, 19770), (1195, 15816), (1318, 14340), (1434, 13180), (1912, 9885), (1977, 9560), (2390, 7908), (2636, 7170), (2868, 6590), (3295, 5736), (3585, 5272), (3954, 4780)]