20878450

素因数分解:

$2^1\times 5^2\times {\mathrm{211}}^1\times {\mathrm{1979}}^1$

素因数の和:2202

約数の個数: 24

約数和(自身を含む): 39037680

約数和(自身を除く): 18159230

約数列:

[1, 2, 5, 10, 25, 50, 211, 422, 1055, 1979, 2110, 3958, 5275, 9895, 10550, 19790, 49475, 98950, 417569, 835138, 2087845, 4175690, 10439225, 20878450]

約数ペア:

[(1, 20878450), (2, 10439225), (5, 4175690), (10, 2087845), (25, 835138), (50, 417569), (211, 98950), (422, 49475), (1055, 19790), (1979, 10550), (2110, 9895), (3958, 5275)]