20951975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1249}}^1$

素因数の和:1331

約数の個数: 24

約数和(自身を含む): 28830000

約数和(自身を除く): 7878025

約数列:

[1, 5, 11, 25, 55, 61, 275, 305, 671, 1249, 1525, 3355, 6245, 13739, 16775, 31225, 68695, 76189, 343475, 380945, 838079, 1904725, 4190395, 20951975]

約数ペア:

[(1, 20951975), (5, 4190395), (11, 1904725), (25, 838079), (55, 380945), (61, 343475), (275, 76189), (305, 68695), (671, 31225), (1249, 16775), (1525, 13739), (3355, 6245)]