206896840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1\times {\mathrm{277}}^1$

素因数の和:622

約数の個数: 64

約数和(自身を含む): 475580160

約数和(自身を除く): 268683320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 263, 277, 284, 355, 526, 554, 568, 710, 1052, 1108, 1315, 1385, 1420, 2104, 2216, 2630, 2770, 2840, 5260, 5540, 10520, 11080, 18673, 19667, 37346, 39334, 72851, 74692, 78668, 93365, 98335, 145702, 149384, 157336, 186730, 196670, 291404, 364255, 373460, 393340, 582808, 728510, 746920, 786680, 1457020, 2914040, 5172421, 10344842, 20689684, 25862105, 41379368, 51724210, 103448420, 206896840]

約数ペア:

[(1, 206896840), (2, 103448420), (4, 51724210), (5, 41379368), (8, 25862105), (10, 20689684), (20, 10344842), (40, 5172421), (71, 2914040), (142, 1457020), (263, 786680), (277, 746920), (284, 728510), (355, 582808), (526, 393340), (554, 373460), (568, 364255), (710, 291404), (1052, 196670), (1108, 186730), (1315, 157336), (1385, 149384), (1420, 145702), (2104, 98335), (2216, 93365), (2630, 78668), (2770, 74692), (2840, 72851), (5260, 39334), (5540, 37346), (10520, 19667), (11080, 18673)]