400979605

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{19709}}^1$

素因数の和:20040

約数の個数: 16

約数和(自身を含む): 519870960

約数和(自身を除く): 118891355

約数列:

[1, 5, 13, 65, 313, 1565, 4069, 19709, 20345, 98545, 256217, 1281085, 6168917, 30844585, 80195921, 400979605]

約数ペア:

[(1, 400979605), (5, 80195921), (13, 30844585), (65, 6168917), (313, 1281085), (1565, 256217), (4069, 98545), (19709, 20345)]