21331580

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{587}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 26084740

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 79, 92, 115, 158, 230, 316, 395, 460, 587, 790, 1174, 1580, 1817, 2348, 2935, 3634, 5870, 7268, 9085, 11740, 13501, 18170, 27002, 36340, 46373, 54004, 67505, 92746, 135010, 185492, 231865, 270020, 463730, 927460, 1066579, 2133158, 4266316, 5332895, 10665790, 21331580]

約数ペア:

[(1, 21331580), (2, 10665790), (4, 5332895), (5, 4266316), (10, 2133158), (20, 1066579), (23, 927460), (46, 463730), (79, 270020), (92, 231865), (115, 185492), (158, 135010), (230, 92746), (316, 67505), (395, 54004), (460, 46373), (587, 36340), (790, 27002), (1174, 18170), (1580, 13501), (1817, 11740), (2348, 9085), (2935, 7268), (3634, 5870)]