81656380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{314063}}^1$

素因数の和:314085

約数の個数: 24

約数和(自身を含む): 184669632

約数和(自身を除く): 103013252

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 314063, 628126, 1256252, 1570315, 3140630, 4082819, 6281260, 8165638, 16331276, 20414095, 40828190, 81656380]

約数ペア:

[(1, 81656380), (2, 40828190), (4, 20414095), (5, 16331276), (10, 8165638), (13, 6281260), (20, 4082819), (26, 3140630), (52, 1570315), (65, 1256252), (130, 628126), (260, 314063)]