21432620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2633}}^1$

素因数の和:2690

約数の個数: 48

約数和(自身を含む): 50446368

約数和(自身を除く): 29013748

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2633, 4070, 5266, 8140, 10532, 13165, 26330, 28963, 52660, 57926, 97421, 115852, 144815, 194842, 289630, 389684, 487105, 579260, 974210, 1071631, 1948420, 2143262, 4286524, 5358155, 10716310, 21432620]

約数ペア:

[(1, 21432620), (2, 10716310), (4, 5358155), (5, 4286524), (10, 2143262), (11, 1948420), (20, 1071631), (22, 974210), (37, 579260), (44, 487105), (55, 389684), (74, 289630), (110, 194842), (148, 144815), (185, 115852), (220, 97421), (370, 57926), (407, 52660), (740, 28963), (814, 26330), (1628, 13165), (2035, 10532), (2633, 8140), (4070, 5266)]