20867396

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 42504000

約数和(自身を除く): 21636604

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 109, 209, 218, 229, 418, 436, 458, 836, 916, 1199, 2071, 2398, 2519, 4142, 4351, 4796, 5038, 8284, 8702, 10076, 17404, 22781, 24961, 45562, 47861, 49922, 91124, 95722, 99844, 191444, 274571, 474259, 549142, 948518, 1098284, 1897036, 5216849, 10433698, 20867396]

約数ペア:

[(1, 20867396), (2, 10433698), (4, 5216849), (11, 1897036), (19, 1098284), (22, 948518), (38, 549142), (44, 474259), (76, 274571), (109, 191444), (209, 99844), (218, 95722), (229, 91124), (418, 49922), (436, 47861), (458, 45562), (836, 24961), (916, 22781), (1199, 17404), (2071, 10076), (2398, 8702), (2519, 8284), (4142, 5038), (4351, 4796)]