21656470

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{313}}^1$

素因数の和:385

約数の個数: 64

約数和(自身を含む): 46391616

約数和(自身を除く): 24735146

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 37, 55, 74, 85, 110, 170, 185, 187, 313, 370, 374, 407, 626, 629, 814, 935, 1258, 1565, 1870, 2035, 3130, 3145, 3443, 4070, 5321, 6290, 6886, 6919, 10642, 11581, 13838, 17215, 23162, 26605, 34430, 34595, 53210, 57905, 58531, 69190, 115810, 117062, 127391, 196877, 254782, 292655, 393754, 585310, 636955, 984385, 1273910, 1968770, 2165647, 4331294, 10828235, 21656470]

約数ペア:

[(1, 21656470), (2, 10828235), (5, 4331294), (10, 2165647), (11, 1968770), (17, 1273910), (22, 984385), (34, 636955), (37, 585310), (55, 393754), (74, 292655), (85, 254782), (110, 196877), (170, 127391), (185, 117062), (187, 115810), (313, 69190), (370, 58531), (374, 57905), (407, 53210), (626, 34595), (629, 34430), (814, 26605), (935, 23162), (1258, 17215), (1565, 13838), (1870, 11581), (2035, 10642), (3130, 6919), (3145, 6886), (3443, 6290), (4070, 5321)]