21261394

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^3\times {\mathrm{163}}^1$

素因数の和:212

約数の個数: 48

約数和(自身を含む): 41056416

約数和(自身を除く): 19795022

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 121, 154, 163, 242, 326, 539, 847, 1078, 1141, 1331, 1694, 1793, 2282, 2662, 3586, 5929, 7987, 9317, 11858, 12551, 15974, 18634, 19723, 25102, 39446, 65219, 87857, 130438, 138061, 175714, 216953, 276122, 433906, 966427, 1518671, 1932854, 3037342, 10630697, 21261394]

約数ペア:

[(1, 21261394), (2, 10630697), (7, 3037342), (11, 1932854), (14, 1518671), (22, 966427), (49, 433906), (77, 276122), (98, 216953), (121, 175714), (154, 138061), (163, 130438), (242, 87857), (326, 65219), (539, 39446), (847, 25102), (1078, 19723), (1141, 18634), (1331, 15974), (1694, 12551), (1793, 11858), (2282, 9317), (2662, 7987), (3586, 5929)]