21907520

素因数分解:

$2^6\times 5^1\times {\mathrm{223}}^1\times {\mathrm{307}}^1$

素因数の和:547

約数の個数: 56

約数和(自身を含む): 52571904

約数和(自身を除く): 30664384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 223, 307, 320, 446, 614, 892, 1115, 1228, 1535, 1784, 2230, 2456, 3070, 3568, 4460, 4912, 6140, 7136, 8920, 9824, 12280, 14272, 17840, 19648, 24560, 35680, 49120, 68461, 71360, 98240, 136922, 273844, 342305, 547688, 684610, 1095376, 1369220, 2190752, 2738440, 4381504, 5476880, 10953760, 21907520]

約数ペア:

[(1, 21907520), (2, 10953760), (4, 5476880), (5, 4381504), (8, 2738440), (10, 2190752), (16, 1369220), (20, 1095376), (32, 684610), (40, 547688), (64, 342305), (80, 273844), (160, 136922), (223, 98240), (307, 71360), (320, 68461), (446, 49120), (614, 35680), (892, 24560), (1115, 19648), (1228, 17840), (1535, 14272), (1784, 12280), (2230, 9824), (2456, 8920), (3070, 7136), (3568, 6140), (4460, 4912)]