138937640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{263}}^1\times {\mathrm{281}}^1$

素因数の和:602

約数の個数: 64

約数和(自身を含む): 321615360

約数和(自身を除く): 182677720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 263, 281, 376, 470, 526, 562, 940, 1052, 1124, 1315, 1405, 1880, 2104, 2248, 2630, 2810, 5260, 5620, 10520, 11240, 12361, 13207, 24722, 26414, 49444, 52828, 61805, 66035, 73903, 98888, 105656, 123610, 132070, 147806, 247220, 264140, 295612, 369515, 494440, 528280, 591224, 739030, 1478060, 2956120, 3473441, 6946882, 13893764, 17367205, 27787528, 34734410, 69468820, 138937640]

約数ペア:

[(1, 138937640), (2, 69468820), (4, 34734410), (5, 27787528), (8, 17367205), (10, 13893764), (20, 6946882), (40, 3473441), (47, 2956120), (94, 1478060), (188, 739030), (235, 591224), (263, 528280), (281, 494440), (376, 369515), (470, 295612), (526, 264140), (562, 247220), (940, 147806), (1052, 132070), (1124, 123610), (1315, 105656), (1405, 98888), (1880, 73903), (2104, 66035), (2248, 61805), (2630, 52828), (2810, 49444), (5260, 26414), (5620, 24722), (10520, 13207), (11240, 12361)]