20131525

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:421

約数の個数: 24

約数和(自身を含む): 26046944

約数和(自身を除く): 5915419

約数列:

[1, 5, 25, 43, 61, 215, 305, 307, 1075, 1525, 1535, 2623, 7675, 13115, 13201, 18727, 65575, 66005, 93635, 330025, 468175, 805261, 4026305, 20131525]

約数ペア:

[(1, 20131525), (5, 4026305), (25, 805261), (43, 468175), (61, 330025), (215, 93635), (305, 66005), (307, 65575), (1075, 18727), (1525, 13201), (1535, 13115), (2623, 7675)]