21363815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{313}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 30113856

約数和(自身を除く): 8750041

約数列:

[1, 5, 11, 17, 55, 73, 85, 187, 313, 365, 803, 935, 1241, 1565, 3443, 4015, 5321, 6205, 13651, 17215, 22849, 26605, 58531, 68255, 114245, 251339, 292655, 388433, 1256695, 1942165, 4272763, 21363815]

約数ペア:

[(1, 21363815), (5, 4272763), (11, 1942165), (17, 1256695), (55, 388433), (73, 292655), (85, 251339), (187, 114245), (313, 68255), (365, 58531), (803, 26605), (935, 22849), (1241, 17215), (1565, 13651), (3443, 6205), (4015, 5321)]