20780145796

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{273422971}}^1$

素因数の和:273422994

約数の個数: 12

約数和(自身を含む): 38279216080

約数和(自身を除く): 17499070284

約数列:

[1, 2, 4, 19, 38, 76, 273422971, 546845942, 1093691884, 5195036449, 10390072898, 20780145796]

約数ペア:

[(1, 20780145796), (2, 10390072898), (4, 5195036449), (19, 1093691884), (38, 546845942), (76, 273422971)]