19400240

素因数分解:

$2^4\times 5^1\times {\mathrm{281}}^1\times {\mathrm{863}}^1$

素因数の和:1157

約数の個数: 40

約数和(自身を含む): 45318528

約数和(自身を除く): 25918288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 281, 562, 863, 1124, 1405, 1726, 2248, 2810, 3452, 4315, 4496, 5620, 6904, 8630, 11240, 13808, 17260, 22480, 34520, 69040, 242503, 485006, 970012, 1212515, 1940024, 2425030, 3880048, 4850060, 9700120, 19400240]

約数ペア:

[(1, 19400240), (2, 9700120), (4, 4850060), (5, 3880048), (8, 2425030), (10, 1940024), (16, 1212515), (20, 970012), (40, 485006), (80, 242503), (281, 69040), (562, 34520), (863, 22480), (1124, 17260), (1405, 13808), (1726, 11240), (2248, 8630), (2810, 6904), (3452, 5620), (4315, 4496)]