51101840

素因数分解:

$2^4\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1609}}^1$

素因数の和:2019

約数の個数: 40

約数和(自身を含む): 119185080

約数和(自身を除く): 68083240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397, 794, 1588, 1609, 1985, 3176, 3218, 3970, 6352, 6436, 7940, 8045, 12872, 15880, 16090, 25744, 31760, 32180, 64360, 128720, 638773, 1277546, 2555092, 3193865, 5110184, 6387730, 10220368, 12775460, 25550920, 51101840]

約数ペア:

[(1, 51101840), (2, 25550920), (4, 12775460), (5, 10220368), (8, 6387730), (10, 5110184), (16, 3193865), (20, 2555092), (40, 1277546), (80, 638773), (397, 128720), (794, 64360), (1588, 32180), (1609, 31760), (1985, 25744), (3176, 16090), (3218, 15880), (3970, 12872), (6352, 8045), (6436, 7940)]