17968760

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2129}}^1$

素因数の和:2351

約数の個数: 32

約数和(自身を含む): 40640400

約数和(自身を除く): 22671640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 2129, 4220, 4258, 8440, 8516, 10645, 17032, 21290, 42580, 85160, 449219, 898438, 1796876, 2246095, 3593752, 4492190, 8984380, 17968760]

約数ペア:

[(1, 17968760), (2, 8984380), (4, 4492190), (5, 3593752), (8, 2246095), (10, 1796876), (20, 898438), (40, 449219), (211, 85160), (422, 42580), (844, 21290), (1055, 17032), (1688, 10645), (2110, 8516), (2129, 8440), (4220, 4258)]