18728040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{653}}^1$

素因数の和:906

約数の個数: 64

約数和(自身を含む): 56505600

約数和(自身を除く): 37777560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 239, 478, 653, 717, 956, 1195, 1306, 1434, 1912, 1959, 2390, 2612, 2868, 3265, 3585, 3918, 4780, 5224, 5736, 6530, 7170, 7836, 9560, 9795, 13060, 14340, 15672, 19590, 26120, 28680, 39180, 78360, 156067, 312134, 468201, 624268, 780335, 936402, 1248536, 1560670, 1872804, 2341005, 3121340, 3745608, 4682010, 6242680, 9364020, 18728040]

約数ペア:

[(1, 18728040), (2, 9364020), (3, 6242680), (4, 4682010), (5, 3745608), (6, 3121340), (8, 2341005), (10, 1872804), (12, 1560670), (15, 1248536), (20, 936402), (24, 780335), (30, 624268), (40, 468201), (60, 312134), (120, 156067), (239, 78360), (478, 39180), (653, 28680), (717, 26120), (956, 19590), (1195, 15672), (1306, 14340), (1434, 13060), (1912, 9795), (1959, 9560), (2390, 7836), (2612, 7170), (2868, 6530), (3265, 5736), (3585, 5224), (3918, 4780)]