21000427930

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{123531929}}^1$

素因数の和:123531953

約数の個数: 16

約数和(自身を含む): 40024345320

約数和(自身を除く): 19023917390

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 123531929, 247063858, 617659645, 1235319290, 2100042793, 4200085586, 10500213965, 21000427930]

約数ペア:

[(1, 21000427930), (2, 10500213965), (5, 4200085586), (10, 2100042793), (17, 1235319290), (34, 617659645), (85, 247063858), (170, 123531929)]