21489896

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{919}}^1$

素因数の和:1041

約数の個数: 32

約数和(自身を含む): 41952000

約数和(自身を除く): 20462104

約数列:

[1, 2, 4, 8, 37, 74, 79, 148, 158, 296, 316, 632, 919, 1838, 2923, 3676, 5846, 7352, 11692, 23384, 34003, 68006, 72601, 136012, 145202, 272024, 290404, 580808, 2686237, 5372474, 10744948, 21489896]

約数ペア:

[(1, 21489896), (2, 10744948), (4, 5372474), (8, 2686237), (37, 580808), (74, 290404), (79, 272024), (148, 145202), (158, 136012), (296, 72601), (316, 68006), (632, 34003), (919, 23384), (1838, 11692), (2923, 7352), (3676, 5846)]