21407737

素因数分解:

${\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 25034400

約数和(自身を除く): 3626663

約数列:

[1, 13, 19, 59, 113, 169, 247, 767, 1121, 1469, 2147, 3211, 6667, 9971, 14573, 19097, 27911, 86671, 126673, 189449, 362843, 1126723, 1646749, 21407737]

約数ペア:

[(1, 21407737), (13, 1646749), (19, 1126723), (59, 362843), (113, 189449), (169, 126673), (247, 86671), (767, 27911), (1121, 19097), (1469, 14573), (2147, 9971), (3211, 6667)]