123338840

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{18917}}^1$

素因数の和:19091

約数の個数: 32

約数和(自身を含む): 279229680

約数和(自身を除く): 155890840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 18917, 37834, 75668, 94585, 151336, 189170, 378340, 756680, 3083471, 6166942, 12333884, 15417355, 24667768, 30834710, 61669420, 123338840]

約数ペア:

[(1, 123338840), (2, 61669420), (4, 30834710), (5, 24667768), (8, 15417355), (10, 12333884), (20, 6166942), (40, 3083471), (163, 756680), (326, 378340), (652, 189170), (815, 151336), (1304, 94585), (1630, 75668), (3260, 37834), (6520, 18917)]