13818025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 20342448

約数和(自身を除く): 6524423

約数列:

[1, 5, 13, 17, 25, 41, 61, 65, 85, 205, 221, 305, 325, 425, 533, 697, 793, 1025, 1037, 1105, 1525, 2501, 2665, 3485, 3965, 5185, 5525, 9061, 12505, 13325, 13481, 17425, 19825, 25925, 32513, 42517, 45305, 62525, 67405, 162565, 212585, 226525, 337025, 552721, 812825, 1062925, 2763605, 13818025]

約数ペア:

[(1, 13818025), (5, 2763605), (13, 1062925), (17, 812825), (25, 552721), (41, 337025), (61, 226525), (65, 212585), (85, 162565), (205, 67405), (221, 62525), (305, 45305), (325, 42517), (425, 32513), (533, 25925), (697, 19825), (793, 17425), (1025, 13481), (1037, 13325), (1105, 12505), (1525, 9061), (2501, 5525), (2665, 5185), (3485, 3965)]