21037580020

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{859}}^1\times {\mathrm{6841}}^1$

素因数の和:7888

約数の個数: 48

約数和(自身を含む): 44483947200

約数和(自身を除く): 23446367180

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 859, 895, 1718, 1790, 3436, 3580, 4295, 6841, 8590, 13682, 17180, 27364, 34205, 68410, 136820, 153761, 307522, 615044, 768805, 1224539, 1537610, 2449078, 3075220, 4898156, 5876419, 6122695, 11752838, 12245390, 23505676, 24490780, 29382095, 58764190, 117528380, 1051879001, 2103758002, 4207516004, 5259395005, 10518790010, 21037580020]

約数ペア:

[(1, 21037580020), (2, 10518790010), (4, 5259395005), (5, 4207516004), (10, 2103758002), (20, 1051879001), (179, 117528380), (358, 58764190), (716, 29382095), (859, 24490780), (895, 23505676), (1718, 12245390), (1790, 11752838), (3436, 6122695), (3580, 5876419), (4295, 4898156), (6841, 3075220), (8590, 2449078), (13682, 1537610), (17180, 1224539), (27364, 768805), (34205, 615044), (68410, 307522), (136820, 153761)]