21103580

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12713}}^1$

素因数の和:12805

約数の個数: 24

約数和(自身を含む): 44854992

約数和(自身を除く): 23751412

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12713, 25426, 50852, 63565, 127130, 254260, 1055179, 2110358, 4220716, 5275895, 10551790, 21103580]

約数ペア:

[(1, 21103580), (2, 10551790), (4, 5275895), (5, 4220716), (10, 2110358), (20, 1055179), (83, 254260), (166, 127130), (332, 63565), (415, 50852), (830, 25426), (1660, 12713)]