81057160

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1\times {\mathrm{227}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 187142400

約数和(自身を除く): 106085240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 113, 158, 226, 227, 316, 395, 452, 454, 565, 632, 790, 904, 908, 1130, 1135, 1580, 1816, 2260, 2270, 3160, 4520, 4540, 8927, 9080, 17854, 17933, 25651, 35708, 35866, 44635, 51302, 71416, 71732, 89270, 89665, 102604, 128255, 143464, 178540, 179330, 205208, 256510, 357080, 358660, 513020, 717320, 1026040, 2026429, 4052858, 8105716, 10132145, 16211432, 20264290, 40528580, 81057160]

約数ペア:

[(1, 81057160), (2, 40528580), (4, 20264290), (5, 16211432), (8, 10132145), (10, 8105716), (20, 4052858), (40, 2026429), (79, 1026040), (113, 717320), (158, 513020), (226, 358660), (227, 357080), (316, 256510), (395, 205208), (452, 179330), (454, 178540), (565, 143464), (632, 128255), (790, 102604), (904, 89665), (908, 89270), (1130, 71732), (1135, 71416), (1580, 51302), (1816, 44635), (2260, 35866), (2270, 35708), (3160, 25651), (4520, 17933), (4540, 17854), (8927, 9080)]