21198544

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{541}}^1$

素因数の和:659

約数の個数: 40

約数和(自身を含む): 43013120

約数和(自身を除く): 21814576

約数列:

[1, 2, 4, 8, 16, 31, 62, 79, 124, 158, 248, 316, 496, 541, 632, 1082, 1264, 2164, 2449, 4328, 4898, 8656, 9796, 16771, 19592, 33542, 39184, 42739, 67084, 85478, 134168, 170956, 268336, 341912, 683824, 1324909, 2649818, 5299636, 10599272, 21198544]

約数ペア:

[(1, 21198544), (2, 10599272), (4, 5299636), (8, 2649818), (16, 1324909), (31, 683824), (62, 341912), (79, 268336), (124, 170956), (158, 134168), (248, 85478), (316, 67084), (496, 42739), (541, 39184), (632, 33542), (1082, 19592), (1264, 16771), (2164, 9796), (2449, 8656), (4328, 4898)]