12540580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{347}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 28647360

約数和(自身を除く): 16106780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 347, 556, 694, 695, 1388, 1390, 1735, 1807, 2780, 3470, 3614, 4511, 6940, 7228, 9022, 9035, 18044, 18070, 22555, 36140, 45110, 48233, 90220, 96466, 192932, 241165, 482330, 627029, 964660, 1254058, 2508116, 3135145, 6270290, 12540580]

約数ペア:

[(1, 12540580), (2, 6270290), (4, 3135145), (5, 2508116), (10, 1254058), (13, 964660), (20, 627029), (26, 482330), (52, 241165), (65, 192932), (130, 96466), (139, 90220), (260, 48233), (278, 45110), (347, 36140), (556, 22555), (694, 18070), (695, 18044), (1388, 9035), (1390, 9022), (1735, 7228), (1807, 6940), (2780, 4511), (3470, 3614)]