83821720

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{5387}}^1$

素因数の和:5787

約数の個数: 32

約数和(自身を含む): 189118800

約数和(自身を除く): 105297080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 5387, 7780, 10774, 15560, 21548, 26935, 43096, 53870, 107740, 215480, 2095543, 4191086, 8382172, 10477715, 16764344, 20955430, 41910860, 83821720]

約数ペア:

[(1, 83821720), (2, 41910860), (4, 20955430), (5, 16764344), (8, 10477715), (10, 8382172), (20, 4191086), (40, 2095543), (389, 215480), (778, 107740), (1556, 53870), (1945, 43096), (3112, 26935), (3890, 21548), (5387, 15560), (7780, 10774)]