18173960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1381}}^1$

素因数の和:1446

約数の個数: 64

約数和(自身を含む): 47761920

約数和(自身を除く): 29587960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1381, 1645, 1880, 2632, 2762, 3290, 5524, 6580, 6905, 9667, 11048, 13160, 13810, 19334, 27620, 38668, 48335, 55240, 64907, 77336, 96670, 129814, 193340, 259628, 324535, 386680, 454349, 519256, 649070, 908698, 1298140, 1817396, 2271745, 2596280, 3634792, 4543490, 9086980, 18173960]

約数ペア:

[(1, 18173960), (2, 9086980), (4, 4543490), (5, 3634792), (7, 2596280), (8, 2271745), (10, 1817396), (14, 1298140), (20, 908698), (28, 649070), (35, 519256), (40, 454349), (47, 386680), (56, 324535), (70, 259628), (94, 193340), (140, 129814), (188, 96670), (235, 77336), (280, 64907), (329, 55240), (376, 48335), (470, 38668), (658, 27620), (940, 19334), (1316, 13810), (1381, 13160), (1645, 11048), (1880, 9667), (2632, 6905), (2762, 6580), (3290, 5524)]