2540240

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{281}}^1$

素因数の和:407

約数の個数: 40

約数和(自身を含む): 5979528

約数和(自身を除く): 3439288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 281, 452, 562, 565, 904, 1124, 1130, 1405, 1808, 2248, 2260, 2810, 4496, 4520, 5620, 9040, 11240, 22480, 31753, 63506, 127012, 158765, 254024, 317530, 508048, 635060, 1270120, 2540240]

約数ペア:

[(1, 2540240), (2, 1270120), (4, 635060), (5, 508048), (8, 317530), (10, 254024), (16, 158765), (20, 127012), (40, 63506), (80, 31753), (113, 22480), (226, 11240), (281, 9040), (452, 5620), (562, 4520), (565, 4496), (904, 2810), (1124, 2260), (1130, 2248), (1405, 1808)]