388720

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:169

約数の個数: 40

約数和(自身を含む): 932976

約数和(自身を除く): 544256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 113, 172, 215, 226, 344, 430, 452, 565, 688, 860, 904, 1130, 1720, 1808, 2260, 3440, 4520, 4859, 9040, 9718, 19436, 24295, 38872, 48590, 77744, 97180, 194360, 388720]

約数ペア:

[(1, 388720), (2, 194360), (4, 97180), (5, 77744), (8, 48590), (10, 38872), (16, 24295), (20, 19436), (40, 9718), (43, 9040), (80, 4859), (86, 4520), (113, 3440), (172, 2260), (215, 1808), (226, 1720), (344, 1130), (430, 904), (452, 860), (565, 688)]