1281580

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{461}}^1$

素因数の和:609

約数の個数: 24

約数和(自身を含む): 2716560

約数和(自身を除く): 1434980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 461, 556, 695, 922, 1390, 1844, 2305, 2780, 4610, 9220, 64079, 128158, 256316, 320395, 640790, 1281580]

約数ペア:

[(1, 1281580), (2, 640790), (4, 320395), (5, 256316), (10, 128158), (20, 64079), (139, 9220), (278, 4610), (461, 2780), (556, 2305), (695, 1844), (922, 1390)]