8381425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:118

約数の個数: 48

約数和(自身を含む): 12467952

約数和(自身を除く): 4086527

約数列:

[1, 5, 13, 17, 25, 37, 41, 65, 85, 185, 205, 221, 325, 425, 481, 533, 629, 697, 925, 1025, 1105, 1517, 2405, 2665, 3145, 3485, 5525, 7585, 8177, 9061, 12025, 13325, 15725, 17425, 19721, 25789, 37925, 40885, 45305, 98605, 128945, 204425, 226525, 335257, 493025, 644725, 1676285, 8381425]

約数ペア:

[(1, 8381425), (5, 1676285), (13, 644725), (17, 493025), (25, 335257), (37, 226525), (41, 204425), (65, 128945), (85, 98605), (185, 45305), (205, 40885), (221, 37925), (325, 25789), (425, 19721), (481, 17425), (533, 15725), (629, 13325), (697, 12025), (925, 9061), (1025, 8177), (1105, 7585), (1517, 5525), (2405, 3485), (2665, 3145)]