28407820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{6997}}^1$

素因数の和:7042

約数の個数: 48

約数和(自身を含む): 70539840

約数和(自身を除く): 42132020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 6997, 13994, 27988, 34985, 48979, 69970, 97958, 139940, 195916, 202913, 244895, 405826, 489790, 811652, 979580, 1014565, 1420391, 2029130, 2840782, 4058260, 5681564, 7101955, 14203910, 28407820]

約数ペア:

[(1, 28407820), (2, 14203910), (4, 7101955), (5, 5681564), (7, 4058260), (10, 2840782), (14, 2029130), (20, 1420391), (28, 1014565), (29, 979580), (35, 811652), (58, 489790), (70, 405826), (116, 244895), (140, 202913), (145, 195916), (203, 139940), (290, 97958), (406, 69970), (580, 48979), (812, 34985), (1015, 27988), (2030, 13994), (4060, 6997)]