20442970

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{449}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 38394000

約数和(自身を除く): 17951030

約数列:

[1, 2, 5, 10, 29, 58, 145, 157, 290, 314, 449, 785, 898, 1570, 2245, 4490, 4553, 9106, 13021, 22765, 26042, 45530, 65105, 70493, 130210, 140986, 352465, 704930, 2044297, 4088594, 10221485, 20442970]

約数ペア:

[(1, 20442970), (2, 10221485), (5, 4088594), (10, 2044297), (29, 704930), (58, 352465), (145, 140986), (157, 130210), (290, 70493), (314, 65105), (449, 45530), (785, 26042), (898, 22765), (1570, 13021), (2245, 9106), (4490, 4553)]