21758560

素因数分解:

$2^5\times 5^1\times {\mathrm{239}}^1\times {\mathrm{569}}^1$

素因数の和:823

約数の個数: 48

約数和(自身を含む): 51710400

約数和(自身を除く): 29951840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 239, 478, 569, 956, 1138, 1195, 1912, 2276, 2390, 2845, 3824, 4552, 4780, 5690, 7648, 9104, 9560, 11380, 18208, 19120, 22760, 38240, 45520, 91040, 135991, 271982, 543964, 679955, 1087928, 1359910, 2175856, 2719820, 4351712, 5439640, 10879280, 21758560]

約数ペア:

[(1, 21758560), (2, 10879280), (4, 5439640), (5, 4351712), (8, 2719820), (10, 2175856), (16, 1359910), (20, 1087928), (32, 679955), (40, 543964), (80, 271982), (160, 135991), (239, 91040), (478, 45520), (569, 38240), (956, 22760), (1138, 19120), (1195, 18208), (1912, 11380), (2276, 9560), (2390, 9104), (2845, 7648), (3824, 5690), (4552, 4780)]