639740

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1103}}^1$

素因数の和:1141

約数の個数: 24

約数和(自身を含む): 1391040

約数和(自身を除く): 751300

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 1103, 2206, 4412, 5515, 11030, 22060, 31987, 63974, 127948, 159935, 319870, 639740]

約数ペア:

[(1, 639740), (2, 319870), (4, 159935), (5, 127948), (10, 63974), (20, 31987), (29, 22060), (58, 11030), (116, 5515), (145, 4412), (290, 2206), (580, 1103)]