21308910

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3499}}^1$

素因数の和:3545

約数の個数: 64

約数和(自身を含む): 60480000

約数和(自身を除く): 39171090

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 29, 30, 35, 42, 58, 70, 87, 105, 145, 174, 203, 210, 290, 406, 435, 609, 870, 1015, 1218, 2030, 3045, 3499, 6090, 6998, 10497, 17495, 20994, 24493, 34990, 48986, 52485, 73479, 101471, 104970, 122465, 146958, 202942, 244930, 304413, 367395, 507355, 608826, 710297, 734790, 1014710, 1420594, 1522065, 2130891, 3044130, 3551485, 4261782, 7102970, 10654455, 21308910]

約数ペア:

[(1, 21308910), (2, 10654455), (3, 7102970), (5, 4261782), (6, 3551485), (7, 3044130), (10, 2130891), (14, 1522065), (15, 1420594), (21, 1014710), (29, 734790), (30, 710297), (35, 608826), (42, 507355), (58, 367395), (70, 304413), (87, 244930), (105, 202942), (145, 146958), (174, 122465), (203, 104970), (210, 101471), (290, 73479), (406, 52485), (435, 48986), (609, 34990), (870, 24493), (1015, 20994), (1218, 17495), (2030, 10497), (3045, 6998), (3499, 6090)]