189717680

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{263}}^1$

素因数の和:474

約数の個数: 80

約数和(自身を含む): 452542464

約数和(自身を除く): 262824784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 127, 142, 254, 263, 284, 355, 508, 526, 568, 635, 710, 1016, 1052, 1136, 1270, 1315, 1420, 2032, 2104, 2540, 2630, 2840, 4208, 5080, 5260, 5680, 9017, 10160, 10520, 18034, 18673, 21040, 33401, 36068, 37346, 45085, 66802, 72136, 74692, 90170, 93365, 133604, 144272, 149384, 167005, 180340, 186730, 267208, 298768, 334010, 360680, 373460, 534416, 668020, 721360, 746920, 1336040, 1493840, 2371471, 2672080, 4742942, 9485884, 11857355, 18971768, 23714710, 37943536, 47429420, 94858840, 189717680]

約数ペア:

[(1, 189717680), (2, 94858840), (4, 47429420), (5, 37943536), (8, 23714710), (10, 18971768), (16, 11857355), (20, 9485884), (40, 4742942), (71, 2672080), (80, 2371471), (127, 1493840), (142, 1336040), (254, 746920), (263, 721360), (284, 668020), (355, 534416), (508, 373460), (526, 360680), (568, 334010), (635, 298768), (710, 267208), (1016, 186730), (1052, 180340), (1136, 167005), (1270, 149384), (1315, 144272), (1420, 133604), (2032, 93365), (2104, 90170), (2540, 74692), (2630, 72136), (2840, 66802), (4208, 45085), (5080, 37346), (5260, 36068), (5680, 33401), (9017, 21040), (10160, 18673), (10520, 18034)]