21290530

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{467}}^1$

素因数の和:618

約数の個数: 32

約数和(自身を含む): 39626496

約数和(自身を除く): 18335966

約数列:

[1, 2, 5, 10, 47, 94, 97, 194, 235, 467, 470, 485, 934, 970, 2335, 4559, 4670, 9118, 21949, 22795, 43898, 45299, 45590, 90598, 109745, 219490, 226495, 452990, 2129053, 4258106, 10645265, 21290530]

約数ペア:

[(1, 21290530), (2, 10645265), (5, 4258106), (10, 2129053), (47, 452990), (94, 226495), (97, 219490), (194, 109745), (235, 90598), (467, 45590), (470, 45299), (485, 43898), (934, 22795), (970, 21949), (2335, 9118), (4559, 4670)]