21583960

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{2239}}^1$

素因数の和:2491

約数の個数: 32

約数和(自身を含む): 48787200

約数和(自身を除く): 27203240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2239, 2410, 4478, 4820, 8956, 9640, 11195, 17912, 22390, 44780, 89560, 539599, 1079198, 2158396, 2697995, 4316792, 5395990, 10791980, 21583960]

約数ペア:

[(1, 21583960), (2, 10791980), (4, 5395990), (5, 4316792), (8, 2697995), (10, 2158396), (20, 1079198), (40, 539599), (241, 89560), (482, 44780), (964, 22390), (1205, 17912), (1928, 11195), (2239, 9640), (2410, 8956), (4478, 4820)]