31182020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{1279}}^1$

素因数の和:1364

約数の個数: 48

約数和(自身を含む): 69672960

約数和(自身を除く): 38490940

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 53, 92, 106, 115, 212, 230, 265, 460, 530, 1060, 1219, 1279, 2438, 2558, 4876, 5116, 6095, 6395, 12190, 12790, 24380, 25580, 29417, 58834, 67787, 117668, 135574, 147085, 271148, 294170, 338935, 588340, 677870, 1355740, 1559101, 3118202, 6236404, 7795505, 15591010, 31182020]

約数ペア:

[(1, 31182020), (2, 15591010), (4, 7795505), (5, 6236404), (10, 3118202), (20, 1559101), (23, 1355740), (46, 677870), (53, 588340), (92, 338935), (106, 294170), (115, 271148), (212, 147085), (230, 135574), (265, 117668), (460, 67787), (530, 58834), (1060, 29417), (1219, 25580), (1279, 24380), (2438, 12790), (2558, 12190), (4876, 6395), (5116, 6095)]