19937540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{2687}}^1$

素因数の和:2756

約数の個数: 48

約数和(自身を含む): 48771072

約数和(自身を除く): 28833532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 106, 140, 212, 265, 371, 530, 742, 1060, 1484, 1855, 2687, 3710, 5374, 7420, 10748, 13435, 18809, 26870, 37618, 53740, 75236, 94045, 142411, 188090, 284822, 376180, 569644, 712055, 996877, 1424110, 1993754, 2848220, 3987508, 4984385, 9968770, 19937540]

約数ペア:

[(1, 19937540), (2, 9968770), (4, 4984385), (5, 3987508), (7, 2848220), (10, 1993754), (14, 1424110), (20, 996877), (28, 712055), (35, 569644), (53, 376180), (70, 284822), (106, 188090), (140, 142411), (212, 94045), (265, 75236), (371, 53740), (530, 37618), (742, 26870), (1060, 18809), (1484, 13435), (1855, 10748), (2687, 7420), (3710, 5374)]