128686210

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{210961}}^1$

素因数の和:211029

約数の個数: 16

約数和(自身を含む): 235433592

約数和(自身を除く): 106747382

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 210961, 421922, 1054805, 2109610, 12868621, 25737242, 64343105, 128686210]

約数ペア:

[(1, 128686210), (2, 64343105), (5, 25737242), (10, 12868621), (61, 2109610), (122, 1054805), (305, 421922), (610, 210961)]