21335530

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1\times {\mathrm{239}}^1$

素因数の和:438

約数の個数: 32

約数和(自身を含む): 39398400

約数和(自身を除く): 18062870

約数列:

[1, 2, 5, 10, 79, 113, 158, 226, 239, 395, 478, 565, 790, 1130, 1195, 2390, 8927, 17854, 18881, 27007, 37762, 44635, 54014, 89270, 94405, 135035, 188810, 270070, 2133553, 4267106, 10667765, 21335530]

約数ペア:

[(1, 21335530), (2, 10667765), (5, 4267106), (10, 2133553), (79, 270070), (113, 188810), (158, 135035), (226, 94405), (239, 89270), (395, 54014), (478, 44635), (565, 37762), (790, 27007), (1130, 18881), (1195, 17854), (2390, 8927)]