21185710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{751}}^1$

素因数の和:809

約数の個数: 64

約数和(自身を含む): 48513024

約数和(自身を除く): 27327314

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 31, 35, 62, 65, 70, 91, 130, 155, 182, 217, 310, 403, 434, 455, 751, 806, 910, 1085, 1502, 2015, 2170, 2821, 3755, 4030, 5257, 5642, 7510, 9763, 10514, 14105, 19526, 23281, 26285, 28210, 46562, 48815, 52570, 68341, 97630, 116405, 136682, 162967, 232810, 302653, 325934, 341705, 605306, 683410, 814835, 1513265, 1629670, 2118571, 3026530, 4237142, 10592855, 21185710]

約数ペア:

[(1, 21185710), (2, 10592855), (5, 4237142), (7, 3026530), (10, 2118571), (13, 1629670), (14, 1513265), (26, 814835), (31, 683410), (35, 605306), (62, 341705), (65, 325934), (70, 302653), (91, 232810), (130, 162967), (155, 136682), (182, 116405), (217, 97630), (310, 68341), (403, 52570), (434, 48815), (455, 46562), (751, 28210), (806, 26285), (910, 23281), (1085, 19526), (1502, 14105), (2015, 10514), (2170, 9763), (2821, 7510), (3755, 5642), (4030, 5257)]