8216120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:356

約数の個数: 64

約数和(自身を含む): 20528640

約数和(自身を除く): 12312520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 263, 284, 355, 440, 526, 568, 710, 781, 1052, 1315, 1420, 1562, 2104, 2630, 2840, 2893, 3124, 3905, 5260, 5786, 6248, 7810, 10520, 11572, 14465, 15620, 18673, 23144, 28930, 31240, 37346, 57860, 74692, 93365, 115720, 149384, 186730, 205403, 373460, 410806, 746920, 821612, 1027015, 1643224, 2054030, 4108060, 8216120]

約数ペア:

[(1, 8216120), (2, 4108060), (4, 2054030), (5, 1643224), (8, 1027015), (10, 821612), (11, 746920), (20, 410806), (22, 373460), (40, 205403), (44, 186730), (55, 149384), (71, 115720), (88, 93365), (110, 74692), (142, 57860), (220, 37346), (263, 31240), (284, 28930), (355, 23144), (440, 18673), (526, 15620), (568, 14465), (710, 11572), (781, 10520), (1052, 7810), (1315, 6248), (1420, 5786), (1562, 5260), (2104, 3905), (2630, 3124), (2840, 2893)]