638236804

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{433}}^1\times {\mathrm{11887}}^1$

素因数の和:12355

約数の個数: 24

約数和(自身を含む): 1155703808

約数和(自身を除く): 517467004

約数列:

[1, 2, 4, 31, 62, 124, 433, 866, 1732, 11887, 13423, 23774, 26846, 47548, 53692, 368497, 736994, 1473988, 5147071, 10294142, 20588284, 159559201, 319118402, 638236804]

約数ペア:

[(1, 638236804), (2, 319118402), (4, 159559201), (31, 20588284), (62, 10294142), (124, 5147071), (433, 1473988), (866, 736994), (1732, 368497), (11887, 53692), (13423, 47548), (23774, 26846)]