20420881494

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{261806173}}^1$

素因数の和:261806191

約数の個数: 16

約数和(自身を含む): 43983437232

約数和(自身を除く): 23562555738

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 261806173, 523612346, 785418519, 1570837038, 3403480249, 6806960498, 10210440747, 20420881494]

約数ペア:

[(1, 20420881494), (2, 10210440747), (3, 6806960498), (6, 3403480249), (13, 1570837038), (26, 785418519), (39, 523612346), (78, 261806173)]