201917289

素因数分解:

$3^1\times 7^2\times {\mathrm{823}}^1\times {\mathrm{1669}}^1$

素因数の和:2509

約数の個数: 24

約数和(自身を含む): 313746240

約数和(自身を除く): 111828951

約数列:

[1, 3, 7, 21, 49, 147, 823, 1669, 2469, 5007, 5761, 11683, 17283, 35049, 40327, 81781, 120981, 245343, 1373587, 4120761, 9615109, 28845327, 67305763, 201917289]

約数ペア:

[(1, 201917289), (3, 67305763), (7, 28845327), (21, 9615109), (49, 4120761), (147, 1373587), (823, 245343), (1669, 120981), (2469, 81781), (5007, 40327), (5761, 35049), (11683, 17283)]