85218820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{349}}^1\times {\mathrm{421}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 186102000

約数和(自身を除く): 100883180

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 349, 421, 580, 698, 842, 1396, 1684, 1745, 2105, 3490, 4210, 6980, 8420, 10121, 12209, 20242, 24418, 40484, 48836, 50605, 61045, 101210, 122090, 146929, 202420, 244180, 293858, 587716, 734645, 1469290, 2938580, 4260941, 8521882, 17043764, 21304705, 42609410, 85218820]

約数ペア:

[(1, 85218820), (2, 42609410), (4, 21304705), (5, 17043764), (10, 8521882), (20, 4260941), (29, 2938580), (58, 1469290), (116, 734645), (145, 587716), (290, 293858), (349, 244180), (421, 202420), (580, 146929), (698, 122090), (842, 101210), (1396, 61045), (1684, 50605), (1745, 48836), (2105, 40484), (3490, 24418), (4210, 20242), (6980, 12209), (8420, 10121)]