21057130

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^3\times {\mathrm{307}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 40138560

約数和(自身を除く): 19081430

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 307, 361, 614, 722, 1535, 1805, 3070, 3610, 5833, 6859, 11666, 13718, 29165, 34295, 58330, 68590, 110827, 221654, 554135, 1108270, 2105713, 4211426, 10528565, 21057130]

約数ペア:

[(1, 21057130), (2, 10528565), (5, 4211426), (10, 2105713), (19, 1108270), (38, 554135), (95, 221654), (190, 110827), (307, 68590), (361, 58330), (614, 34295), (722, 29165), (1535, 13718), (1805, 11666), (3070, 6859), (3610, 5833)]