21255514

素因数分解:

$2^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{2437}}^1$

素因数の和:2542

約数の個数: 24

約数和(自身を含む): 37520820

約数和(自身を除く): 16265306

約数列:

[1, 2, 7, 14, 49, 89, 98, 178, 623, 1246, 2437, 4361, 4874, 8722, 17059, 34118, 119413, 216893, 238826, 433786, 1518251, 3036502, 10627757, 21255514]

約数ペア:

[(1, 21255514), (2, 10627757), (7, 3036502), (14, 1518251), (49, 433786), (89, 238826), (98, 216893), (178, 119413), (623, 34118), (1246, 17059), (2437, 8722), (4361, 4874)]