20424080

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4817}}^1$

素因数の和:4883

約数の個数: 40

約数和(自身を含む): 48391992

約数和(自身を除く): 27967912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4817, 9634, 19268, 24085, 38536, 48170, 77072, 96340, 192680, 255301, 385360, 510602, 1021204, 1276505, 2042408, 2553010, 4084816, 5106020, 10212040, 20424080]

約数ペア:

[(1, 20424080), (2, 10212040), (4, 5106020), (5, 4084816), (8, 2553010), (10, 2042408), (16, 1276505), (20, 1021204), (40, 510602), (53, 385360), (80, 255301), (106, 192680), (212, 96340), (265, 77072), (424, 48170), (530, 38536), (848, 24085), (1060, 19268), (2120, 9634), (4240, 4817)]