1891640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{131}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 4526280

約数和(自身を除く): 2634640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 131, 152, 190, 262, 361, 380, 524, 655, 722, 760, 1048, 1310, 1444, 1805, 2489, 2620, 2888, 3610, 4978, 5240, 7220, 9956, 12445, 14440, 19912, 24890, 47291, 49780, 94582, 99560, 189164, 236455, 378328, 472910, 945820, 1891640]

約数ペア:

[(1, 1891640), (2, 945820), (4, 472910), (5, 378328), (8, 236455), (10, 189164), (19, 99560), (20, 94582), (38, 49780), (40, 47291), (76, 24890), (95, 19912), (131, 14440), (152, 12445), (190, 9956), (262, 7220), (361, 5240), (380, 4978), (524, 3610), (655, 2888), (722, 2620), (760, 2489), (1048, 1805), (1310, 1444)]