20663575

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:387

約数の個数: 24

約数和(自身を含む): 26717040

約数和(自身を除く): 6053465

約数列:

[1, 5, 25, 37, 89, 185, 251, 445, 925, 1255, 2225, 3293, 6275, 9287, 16465, 22339, 46435, 82325, 111695, 232175, 558475, 826543, 4132715, 20663575]

約数ペア:

[(1, 20663575), (5, 4132715), (25, 826543), (37, 558475), (89, 232175), (185, 111695), (251, 82325), (445, 46435), (925, 22339), (1255, 16465), (2225, 9287), (3293, 6275)]