19984216

素因数分解:

$2^3\times 7^1\times {\mathrm{157}}^1\times {\mathrm{2273}}^1$

素因数の和:2443

約数の個数: 32

約数和(自身を含む): 43115040

約数和(自身を除く): 23130824

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 157, 314, 628, 1099, 1256, 2198, 2273, 4396, 4546, 8792, 9092, 15911, 18184, 31822, 63644, 127288, 356861, 713722, 1427444, 2498027, 2854888, 4996054, 9992108, 19984216]

約数ペア:

[(1, 19984216), (2, 9992108), (4, 4996054), (7, 2854888), (8, 2498027), (14, 1427444), (28, 713722), (56, 356861), (157, 127288), (314, 63644), (628, 31822), (1099, 18184), (1256, 15911), (2198, 9092), (2273, 8792), (4396, 4546)]