21845745

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{21107}}^1$

素因数の和:21141

約数の個数: 24

約数和(自身を含む): 39514176

約数和(自身を除く): 17668431

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 21107, 63321, 105535, 189963, 316605, 485461, 949815, 1456383, 2427305, 4369149, 7281915, 21845745]

約数ペア:

[(1, 21845745), (3, 7281915), (5, 4369149), (9, 2427305), (15, 1456383), (23, 949815), (45, 485461), (69, 316605), (115, 189963), (207, 105535), (345, 63321), (1035, 21107)]