21501795

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{4357}}^1$

素因数の和:4419

約数の個数: 32

約数和(自身を含む): 40163328

約数和(自身を除く): 18661533

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 105, 141, 235, 329, 705, 987, 1645, 4357, 4935, 13071, 21785, 30499, 65355, 91497, 152495, 204779, 457485, 614337, 1023895, 1433453, 3071685, 4300359, 7167265, 21501795]

約数ペア:

[(1, 21501795), (3, 7167265), (5, 4300359), (7, 3071685), (15, 1433453), (21, 1023895), (35, 614337), (47, 457485), (105, 204779), (141, 152495), (235, 91497), (329, 65355), (705, 30499), (987, 21785), (1645, 13071), (4357, 4935)]