77638120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{277279}}^1$

素因数の和:277297

約数の個数: 32

約数和(自身を含む): 199641600

約数和(自身を除く): 122003480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 277279, 554558, 1109116, 1386395, 1940953, 2218232, 2772790, 3881906, 5545580, 7763812, 9704765, 11091160, 15527624, 19409530, 38819060, 77638120]

約数ペア:

[(1, 77638120), (2, 38819060), (4, 19409530), (5, 15527624), (7, 11091160), (8, 9704765), (10, 7763812), (14, 5545580), (20, 3881906), (28, 2772790), (35, 2218232), (40, 1940953), (56, 1386395), (70, 1109116), (140, 554558), (280, 277279)]