161622820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{197101}}^1$

素因数の和:197151

約数の個数: 24

約数和(自身を含む): 347687928

約数和(自身を除く): 186065108

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 197101, 394202, 788404, 985505, 1971010, 3942020, 8081141, 16162282, 32324564, 40405705, 80811410, 161622820]

約数ペア:

[(1, 161622820), (2, 80811410), (4, 40405705), (5, 32324564), (10, 16162282), (20, 8081141), (41, 3942020), (82, 1971010), (164, 985505), (205, 788404), (410, 394202), (820, 197101)]