21492189

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{653}}^1$

素因数の和:738

約数の個数: 32

約数和(自身を含む): 33903360

約数和(自身を除く): 12411171

約数列:

[1, 3, 9, 23, 27, 53, 69, 159, 207, 477, 621, 653, 1219, 1431, 1959, 3657, 5877, 10971, 15019, 17631, 32913, 34609, 45057, 103827, 135171, 311481, 405513, 796007, 934443, 2388021, 7164063, 21492189]

約数ペア:

[(1, 21492189), (3, 7164063), (9, 2388021), (23, 934443), (27, 796007), (53, 405513), (69, 311481), (159, 135171), (207, 103827), (477, 45057), (621, 34609), (653, 32913), (1219, 17631), (1431, 15019), (1959, 10971), (3657, 5877)]