21000921610

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{123534833}}^1$

素因数の和:123534857

約数の個数: 16

約数和(自身を含む): 40025286216

約数和(自身を除く): 19024364606

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 123534833, 247069666, 617674165, 1235348330, 2100092161, 4200184322, 10500460805, 21000921610]

約数ペア:

[(1, 21000921610), (2, 10500460805), (5, 4200184322), (10, 2100092161), (17, 1235348330), (34, 617674165), (85, 247069666), (170, 123534833)]