64271985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{821}}^1$

素因数の和:1153

約数の個数: 32

約数和(自身を含む): 109372032

約数和(自身を除く): 45100047

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 307, 821, 921, 1535, 2463, 4105, 4605, 5219, 12315, 13957, 15657, 26095, 41871, 69785, 78285, 209355, 252047, 756141, 1260235, 3780705, 4284799, 12854397, 21423995, 64271985]

約数ペア:

[(1, 64271985), (3, 21423995), (5, 12854397), (15, 4284799), (17, 3780705), (51, 1260235), (85, 756141), (255, 252047), (307, 209355), (821, 78285), (921, 69785), (1535, 41871), (2463, 26095), (4105, 15657), (4605, 13957), (5219, 12315)]