21684580

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{13063}}^1$

素因数の和:13155

約数の個数: 24

約数和(自身を含む): 46089792

約数和(自身を除く): 24405212

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 13063, 26126, 52252, 65315, 130630, 261260, 1084229, 2168458, 4336916, 5421145, 10842290, 21684580]

約数ペア:

[(1, 21684580), (2, 10842290), (4, 5421145), (5, 4336916), (10, 2168458), (20, 1084229), (83, 261260), (166, 130630), (332, 65315), (415, 52252), (830, 26126), (1660, 13063)]