21000739209

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{4723}}^1\times {\mathrm{51109}}^1$

素因数の和:55864

約数の個数: 16

約数和(自身を含む): 28973236800

約数和(自身を除く): 7972497591

約数列:

[1, 3, 29, 87, 4723, 14169, 51109, 136967, 153327, 410901, 1482161, 4446483, 241387807, 724163421, 7000246403, 21000739209]

約数ペア:

[(1, 21000739209), (3, 7000246403), (29, 724163421), (87, 241387807), (4723, 4446483), (14169, 1482161), (51109, 410901), (136967, 153327)]