18919756

素因数分解:

$2^2\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{641}}^1$

素因数の和:849

約数の個数: 24

約数和(自身を含む): 34082496

約数和(自身を除く): 15162740

約数列:

[1, 2, 4, 47, 94, 157, 188, 314, 628, 641, 1282, 2564, 7379, 14758, 29516, 30127, 60254, 100637, 120508, 201274, 402548, 4729939, 9459878, 18919756]

約数ペア:

[(1, 18919756), (2, 9459878), (4, 4729939), (47, 402548), (94, 201274), (157, 120508), (188, 100637), (314, 60254), (628, 30127), (641, 29516), (1282, 14758), (2564, 7379)]