21480574

素因数分解:

$2^1\times {\mathrm{23}}^2\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:384

約数の個数: 24

約数和(自身を含む): 34241760

約数和(自身を除く): 12761186

約数列:

[1, 2, 23, 46, 79, 158, 257, 514, 529, 1058, 1817, 3634, 5911, 11822, 20303, 40606, 41791, 83582, 135953, 271906, 466969, 933938, 10740287, 21480574]

約数ペア:

[(1, 21480574), (2, 10740287), (23, 933938), (46, 466969), (79, 271906), (158, 135953), (257, 83582), (514, 41791), (529, 40606), (1058, 20303), (1817, 11822), (3634, 5911)]