2018906680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{17981}}^1$

素因数の和:18400

約数の個数: 64

約数和(自身を含む): 5204710080

約数和(自身を除く): 3185803400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 401, 802, 1604, 2005, 2807, 3208, 4010, 5614, 8020, 11228, 14035, 16040, 17981, 22456, 28070, 35962, 56140, 71924, 89905, 112280, 125867, 143848, 179810, 251734, 359620, 503468, 629335, 719240, 1006936, 1258670, 2517340, 5034680, 7210381, 14420762, 28841524, 36051905, 50472667, 57683048, 72103810, 100945334, 144207620, 201890668, 252363335, 288415240, 403781336, 504726670, 1009453340, 2018906680]

約数ペア:

[(1, 2018906680), (2, 1009453340), (4, 504726670), (5, 403781336), (7, 288415240), (8, 252363335), (10, 201890668), (14, 144207620), (20, 100945334), (28, 72103810), (35, 57683048), (40, 50472667), (56, 36051905), (70, 28841524), (140, 14420762), (280, 7210381), (401, 5034680), (802, 2517340), (1604, 1258670), (2005, 1006936), (2807, 719240), (3208, 629335), (4010, 503468), (5614, 359620), (8020, 251734), (11228, 179810), (14035, 143848), (16040, 125867), (17981, 112280), (22456, 89905), (28070, 71924), (35962, 56140)]