20678488

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{419}}^1$

素因数の和:655

約数の個数: 32

約数和(自身を含む): 40320000

約数和(自身を除く): 19641512

約数列:

[1, 2, 4, 8, 31, 62, 124, 199, 248, 398, 419, 796, 838, 1592, 1676, 3352, 6169, 12338, 12989, 24676, 25978, 49352, 51956, 83381, 103912, 166762, 333524, 667048, 2584811, 5169622, 10339244, 20678488]

約数ペア:

[(1, 20678488), (2, 10339244), (4, 5169622), (8, 2584811), (31, 667048), (62, 333524), (124, 166762), (199, 103912), (248, 83381), (398, 51956), (419, 49352), (796, 25978), (838, 24676), (1592, 12989), (1676, 12338), (3352, 6169)]