66221720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{38501}}^1$

素因数の和:38555

約数の個数: 32

約数和(自身を含む): 152467920

約数和(自身を除く): 86246200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 38501, 77002, 154004, 192505, 308008, 385010, 770020, 1540040, 1655543, 3311086, 6622172, 8277715, 13244344, 16555430, 33110860, 66221720]

約数ペア:

[(1, 66221720), (2, 33110860), (4, 16555430), (5, 13244344), (8, 8277715), (10, 6622172), (20, 3311086), (40, 1655543), (43, 1540040), (86, 770020), (172, 385010), (215, 308008), (344, 192505), (430, 154004), (860, 77002), (1720, 38501)]