78851240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151637}}^1$

素因数の和:151661

約数の個数: 32

約数和(自身を含む): 191063880

約数和(自身を除く): 112212640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 151637, 303274, 606548, 758185, 1213096, 1516370, 1971281, 3032740, 3942562, 6065480, 7885124, 9856405, 15770248, 19712810, 39425620, 78851240]

約数ペア:

[(1, 78851240), (2, 39425620), (4, 19712810), (5, 15770248), (8, 9856405), (10, 7885124), (13, 6065480), (20, 3942562), (26, 3032740), (40, 1971281), (52, 1516370), (65, 1213096), (104, 758185), (130, 606548), (260, 303274), (520, 151637)]