19706480

素因数分解:

$2^4\times 5^1\times {\mathrm{313}}^1\times {\mathrm{787}}^1$

素因数の和:1113

約数の個数: 40

約数和(自身を含む): 46022352

約数和(自身を除く): 26315872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 313, 626, 787, 1252, 1565, 1574, 2504, 3130, 3148, 3935, 5008, 6260, 6296, 7870, 12520, 12592, 15740, 25040, 31480, 62960, 246331, 492662, 985324, 1231655, 1970648, 2463310, 3941296, 4926620, 9853240, 19706480]

約数ペア:

[(1, 19706480), (2, 9853240), (4, 4926620), (5, 3941296), (8, 2463310), (10, 1970648), (16, 1231655), (20, 985324), (40, 492662), (80, 246331), (313, 62960), (626, 31480), (787, 25040), (1252, 15740), (1565, 12592), (1574, 12520), (2504, 7870), (3130, 6296), (3148, 6260), (3935, 5008)]