25100020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{421}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 57851136

約数和(自身を除く): 32751116

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 271, 421, 542, 842, 1084, 1355, 1684, 2105, 2710, 2981, 4210, 4631, 5420, 5962, 8420, 9262, 11924, 14905, 18524, 23155, 29810, 46310, 59620, 92620, 114091, 228182, 456364, 570455, 1140910, 1255001, 2281820, 2510002, 5020004, 6275005, 12550010, 25100020]

約数ペア:

[(1, 25100020), (2, 12550010), (4, 6275005), (5, 5020004), (10, 2510002), (11, 2281820), (20, 1255001), (22, 1140910), (44, 570455), (55, 456364), (110, 228182), (220, 114091), (271, 92620), (421, 59620), (542, 46310), (842, 29810), (1084, 23155), (1355, 18524), (1684, 14905), (2105, 11924), (2710, 9262), (2981, 8420), (4210, 5962), (4631, 5420)]