19493305

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:130

約数の個数: 48

約数和(自身を含む): 28460160

約数和(自身を除く): 8966855

約数列:

[1, 5, 13, 17, 23, 59, 65, 85, 115, 169, 221, 295, 299, 391, 767, 845, 1003, 1105, 1357, 1495, 1955, 2873, 3835, 3887, 5015, 5083, 6785, 9971, 13039, 14365, 17641, 19435, 23069, 25415, 49855, 65195, 66079, 88205, 115345, 169507, 229333, 299897, 330395, 847535, 1146665, 1499485, 3898661, 19493305]

約数ペア:

[(1, 19493305), (5, 3898661), (13, 1499485), (17, 1146665), (23, 847535), (59, 330395), (65, 299897), (85, 229333), (115, 169507), (169, 115345), (221, 88205), (295, 66079), (299, 65195), (391, 49855), (767, 25415), (845, 23069), (1003, 19435), (1105, 17641), (1357, 14365), (1495, 13039), (1955, 9971), (2873, 6785), (3835, 5083), (3887, 5015)]