20421368

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{2129}}^1$

素因数の和:2255

約数の個数: 32

約数和(自身を含む): 42174000

約数和(自身を除く): 21752632

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 109, 218, 436, 872, 1199, 2129, 2398, 4258, 4796, 8516, 9592, 17032, 23419, 46838, 93676, 187352, 232061, 464122, 928244, 1856488, 2552671, 5105342, 10210684, 20421368]

約数ペア:

[(1, 20421368), (2, 10210684), (4, 5105342), (8, 2552671), (11, 1856488), (22, 928244), (44, 464122), (88, 232061), (109, 187352), (218, 93676), (436, 46838), (872, 23419), (1199, 17032), (2129, 9592), (2398, 8516), (4258, 4796)]