71818840

素因数分解:

$2^3\times 5^1\times {\mathrm{1109}}^1\times {\mathrm{1619}}^1$

素因数の和:2739

約数の個数: 32

約数和(自身を含む): 161838000

約数和(自身を除く): 90019160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1109, 1619, 2218, 3238, 4436, 5545, 6476, 8095, 8872, 11090, 12952, 16190, 22180, 32380, 44360, 64760, 1795471, 3590942, 7181884, 8977355, 14363768, 17954710, 35909420, 71818840]

約数ペア:

[(1, 71818840), (2, 35909420), (4, 17954710), (5, 14363768), (8, 8977355), (10, 7181884), (20, 3590942), (40, 1795471), (1109, 64760), (1619, 44360), (2218, 32380), (3238, 22180), (4436, 16190), (5545, 12952), (6476, 11090), (8095, 8872)]