20798325

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4019}}^1$

素因数の和:4058

約数の個数: 36

約数和(自身を含む): 38881440

約数和(自身を除く): 18083115

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 4019, 5175, 12057, 20095, 36171, 60285, 92437, 100475, 180855, 277311, 301425, 462185, 831933, 904275, 1386555, 2310925, 4159665, 6932775, 20798325]

約数ペア:

[(1, 20798325), (3, 6932775), (5, 4159665), (9, 2310925), (15, 1386555), (23, 904275), (25, 831933), (45, 462185), (69, 301425), (75, 277311), (115, 180855), (207, 100475), (225, 92437), (345, 60285), (575, 36171), (1035, 20095), (1725, 12057), (4019, 5175)]