20826544

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{211}}^1$

素因数の和:449

約数の個数: 40

約数和(自身を含む): 42060800

約数和(自身を除く): 21234256

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 199, 211, 248, 398, 422, 496, 796, 844, 1592, 1688, 3184, 3376, 6169, 6541, 12338, 13082, 24676, 26164, 41989, 49352, 52328, 83978, 98704, 104656, 167956, 335912, 671824, 1301659, 2603318, 5206636, 10413272, 20826544]

約数ペア:

[(1, 20826544), (2, 10413272), (4, 5206636), (8, 2603318), (16, 1301659), (31, 671824), (62, 335912), (124, 167956), (199, 104656), (211, 98704), (248, 83978), (398, 52328), (422, 49352), (496, 41989), (796, 26164), (844, 24676), (1592, 13082), (1688, 12338), (3184, 6541), (3376, 6169)]