20989390

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{397}}^1$

素因数の和:732

約数の個数: 32

約数和(自身を含む): 40233024

約数和(自身を除く): 19243634

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 311, 397, 622, 794, 1555, 1985, 3110, 3970, 5287, 6749, 10574, 13498, 26435, 33745, 52870, 67490, 123467, 246934, 617335, 1234670, 2098939, 4197878, 10494695, 20989390]

約数ペア:

[(1, 20989390), (2, 10494695), (5, 4197878), (10, 2098939), (17, 1234670), (34, 617335), (85, 246934), (170, 123467), (311, 67490), (397, 52870), (622, 33745), (794, 26435), (1555, 13498), (1985, 10574), (3110, 6749), (3970, 5287)]