20211440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13297}}^1$

素因数の和:13329

約数の個数: 40

約数和(自身を含む): 49468560

約数和(自身を除く): 29257120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13297, 26594, 53188, 66485, 106376, 132970, 212752, 252643, 265940, 505286, 531880, 1010572, 1063760, 1263215, 2021144, 2526430, 4042288, 5052860, 10105720, 20211440]

約数ペア:

[(1, 20211440), (2, 10105720), (4, 5052860), (5, 4042288), (8, 2526430), (10, 2021144), (16, 1263215), (19, 1063760), (20, 1010572), (38, 531880), (40, 505286), (76, 265940), (80, 252643), (95, 212752), (152, 132970), (190, 106376), (304, 66485), (380, 53188), (760, 26594), (1520, 13297)]