19818890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{751}}^1$

素因数の和:807

約数の個数: 64

約数和(自身を含む): 45480960

約数和(自身を除く): 25662070

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 29, 35, 58, 65, 70, 91, 130, 145, 182, 203, 290, 377, 406, 455, 751, 754, 910, 1015, 1502, 1885, 2030, 2639, 3755, 3770, 5257, 5278, 7510, 9763, 10514, 13195, 19526, 21779, 26285, 26390, 43558, 48815, 52570, 68341, 97630, 108895, 136682, 152453, 217790, 283127, 304906, 341705, 566254, 683410, 762265, 1415635, 1524530, 1981889, 2831270, 3963778, 9909445, 19818890]

約数ペア:

[(1, 19818890), (2, 9909445), (5, 3963778), (7, 2831270), (10, 1981889), (13, 1524530), (14, 1415635), (26, 762265), (29, 683410), (35, 566254), (58, 341705), (65, 304906), (70, 283127), (91, 217790), (130, 152453), (145, 136682), (182, 108895), (203, 97630), (290, 68341), (377, 52570), (406, 48815), (455, 43558), (751, 26390), (754, 26285), (910, 21779), (1015, 19526), (1502, 13195), (1885, 10514), (2030, 9763), (2639, 7510), (3755, 5278), (3770, 5257)]