21398120

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{9067}}^1$

素因数の和:9137

約数の個数: 32

約数和(自身を含む): 48967200

約数和(自身を除く): 27569080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 2360, 9067, 18134, 36268, 45335, 72536, 90670, 181340, 362680, 534953, 1069906, 2139812, 2674765, 4279624, 5349530, 10699060, 21398120]

約数ペア:

[(1, 21398120), (2, 10699060), (4, 5349530), (5, 4279624), (8, 2674765), (10, 2139812), (20, 1069906), (40, 534953), (59, 362680), (118, 181340), (236, 90670), (295, 72536), (472, 45335), (590, 36268), (1180, 18134), (2360, 9067)]