19778505

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{57329}}^1$

素因数の和:57360

約数の個数: 16

約数和(自身を含む): 33022080

約数和(自身を除く): 13243575

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 57329, 171987, 286645, 859935, 1318567, 3955701, 6592835, 19778505]

約数ペア:

[(1, 19778505), (3, 6592835), (5, 3955701), (15, 1318567), (23, 859935), (69, 286645), (115, 171987), (345, 57329)]