21301686

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{293}}^1\times {\mathrm{577}}^1$

素因数の和:885

約数の個数: 48

約数和(自身を含む): 53018784

約数和(自身を除く): 31717098

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 293, 577, 586, 879, 1154, 1731, 1758, 2051, 2637, 3462, 4039, 4102, 5193, 5274, 6153, 8078, 10386, 12117, 12306, 18459, 24234, 36351, 36918, 72702, 169061, 338122, 507183, 1014366, 1183427, 1521549, 2366854, 3043098, 3550281, 7100562, 10650843, 21301686]

約数ペア:

[(1, 21301686), (2, 10650843), (3, 7100562), (6, 3550281), (7, 3043098), (9, 2366854), (14, 1521549), (18, 1183427), (21, 1014366), (42, 507183), (63, 338122), (126, 169061), (293, 72702), (577, 36918), (586, 36351), (879, 24234), (1154, 18459), (1731, 12306), (1758, 12117), (2051, 10386), (2637, 8078), (3462, 6153), (4039, 5274), (4102, 5193)]