20700320

素因数分解:

$2^5\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1931}}^1$

素因数の和:2013

約数の個数: 48

約数和(自身を含む): 49660128

約数和(自身を除く): 28959808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 67, 80, 134, 160, 268, 335, 536, 670, 1072, 1340, 1931, 2144, 2680, 3862, 5360, 7724, 9655, 10720, 15448, 19310, 30896, 38620, 61792, 77240, 129377, 154480, 258754, 308960, 517508, 646885, 1035016, 1293770, 2070032, 2587540, 4140064, 5175080, 10350160, 20700320]

約数ペア:

[(1, 20700320), (2, 10350160), (4, 5175080), (5, 4140064), (8, 2587540), (10, 2070032), (16, 1293770), (20, 1035016), (32, 646885), (40, 517508), (67, 308960), (80, 258754), (134, 154480), (160, 129377), (268, 77240), (335, 61792), (536, 38620), (670, 30896), (1072, 19310), (1340, 15448), (1931, 10720), (2144, 9655), (2680, 7724), (3862, 5360)]