640620292

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{201961}}^1$

素因数の和:202039

約数の個数: 24

約数和(自身を含む): 1227121112

約数和(自身を除く): 586500820

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1586, 3172, 201961, 403922, 807844, 2625493, 5250986, 10501972, 12319621, 24639242, 49278484, 160155073, 320310146, 640620292]

約数ペア:

[(1, 640620292), (2, 320310146), (4, 160155073), (13, 49278484), (26, 24639242), (52, 12319621), (61, 10501972), (122, 5250986), (244, 2625493), (793, 807844), (1586, 403922), (3172, 201961)]