64372720

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18713}}^1$

素因数の和:18769

約数の個数: 40

約数和(自身を含む): 153155376

約数和(自身を除く): 88782656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 18713, 37426, 74852, 93565, 149704, 187130, 299408, 374260, 748520, 804659, 1497040, 1609318, 3218636, 4023295, 6437272, 8046590, 12874544, 16093180, 32186360, 64372720]

約数ペア:

[(1, 64372720), (2, 32186360), (4, 16093180), (5, 12874544), (8, 8046590), (10, 6437272), (16, 4023295), (20, 3218636), (40, 1609318), (43, 1497040), (80, 804659), (86, 748520), (172, 374260), (215, 299408), (344, 187130), (430, 149704), (688, 93565), (860, 74852), (1720, 37426), (3440, 18713)]