19809968

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{9749}}^1$

素因数の和:9884

約数の個数: 20

約数和(自身を含む): 38688000

約数和(自身を除く): 18878032

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 9749, 19498, 38996, 77992, 155984, 1238123, 2476246, 4952492, 9904984, 19809968]

約数ペア:

[(1, 19809968), (2, 9904984), (4, 4952492), (8, 2476246), (16, 1238123), (127, 155984), (254, 77992), (508, 38996), (1016, 19498), (2032, 9749)]