18999884

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{449}}^1$

素因数の和:673

約数の個数: 24

約数和(自身を含む): 34020000

約数和(自身を除く): 15020116

約数列:

[1, 2, 4, 71, 142, 149, 284, 298, 449, 596, 898, 1796, 10579, 21158, 31879, 42316, 63758, 66901, 127516, 133802, 267604, 4749971, 9499942, 18999884]

約数ペア:

[(1, 18999884), (2, 9499942), (4, 4749971), (71, 267604), (142, 133802), (149, 127516), (284, 66901), (298, 63758), (449, 42316), (596, 31879), (898, 21158), (1796, 10579)]