878840

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 2004480

約数和(自身を除く): 1125640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 173, 254, 346, 508, 635, 692, 865, 1016, 1270, 1384, 1730, 2540, 3460, 5080, 6920, 21971, 43942, 87884, 109855, 175768, 219710, 439420, 878840]

約数ペア:

[(1, 878840), (2, 439420), (4, 219710), (5, 175768), (8, 109855), (10, 87884), (20, 43942), (40, 21971), (127, 6920), (173, 5080), (254, 3460), (346, 2540), (508, 1730), (635, 1384), (692, 1270), (865, 1016)]