20214025

素因数分解:

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

素因数の和:142

約数の個数: 36

約数和(自身を含む): 28415716

約数和(自身を除く): 8201691

約数列:

[1, 5, 13, 25, 37, 41, 65, 185, 205, 325, 481, 533, 925, 1025, 1517, 1681, 2405, 2665, 7585, 8405, 12025, 13325, 19721, 21853, 37925, 42025, 62197, 98605, 109265, 310985, 493025, 546325, 808561, 1554925, 4042805, 20214025]

約数ペア:

[(1, 20214025), (5, 4042805), (13, 1554925), (25, 808561), (37, 546325), (41, 493025), (65, 310985), (185, 109265), (205, 98605), (325, 62197), (481, 42025), (533, 37925), (925, 21853), (1025, 19721), (1517, 13325), (1681, 12025), (2405, 8405), (2665, 7585)]