21156086

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{311}}^1$

素因数の和:476

約数の個数: 32

約数和(自身を含む): 37559808

約数和(自身を除く): 16403722

約数列:

[1, 2, 7, 14, 43, 86, 113, 226, 301, 311, 602, 622, 791, 1582, 2177, 4354, 4859, 9718, 13373, 26746, 34013, 35143, 68026, 70286, 93611, 187222, 246001, 492002, 1511149, 3022298, 10578043, 21156086]

約数ペア:

[(1, 21156086), (2, 10578043), (7, 3022298), (14, 1511149), (43, 492002), (86, 246001), (113, 187222), (226, 93611), (301, 70286), (311, 68026), (602, 35143), (622, 34013), (791, 26746), (1582, 13373), (2177, 9718), (4354, 4859)]