21016319740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1009}}^1\times {\mathrm{80111}}^1$

素因数の和:81142

約数の個数: 48

約数和(自身を含む): 47576914560

約数和(自身を除く): 26560594820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1009, 2018, 4036, 5045, 10090, 13117, 20180, 26234, 52468, 65585, 80111, 131170, 160222, 262340, 320444, 400555, 801110, 1041443, 1602220, 2082886, 4165772, 5207215, 10414430, 20828860, 80831999, 161663998, 323327996, 404159995, 808319990, 1050815987, 1616639980, 2101631974, 4203263948, 5254079935, 10508159870, 21016319740]

約数ペア:

[(1, 21016319740), (2, 10508159870), (4, 5254079935), (5, 4203263948), (10, 2101631974), (13, 1616639980), (20, 1050815987), (26, 808319990), (52, 404159995), (65, 323327996), (130, 161663998), (260, 80831999), (1009, 20828860), (2018, 10414430), (4036, 5207215), (5045, 4165772), (10090, 2082886), (13117, 1602220), (20180, 1041443), (26234, 801110), (52468, 400555), (65585, 320444), (80111, 262340), (131170, 160222)]