21168964

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{4721}}^1$

素因数の和:4803

約数の個数: 24

約数和(自身を含む): 39664800

約数和(自身を除く): 18495836

約数列:

[1, 2, 4, 19, 38, 59, 76, 118, 236, 1121, 2242, 4484, 4721, 9442, 18884, 89699, 179398, 278539, 358796, 557078, 1114156, 5292241, 10584482, 21168964]

約数ペア:

[(1, 21168964), (2, 10584482), (4, 5292241), (19, 1114156), (38, 557078), (59, 358796), (76, 278539), (118, 179398), (236, 89699), (1121, 18884), (2242, 9442), (4484, 4721)]