20591912

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{1109}}^1$

素因数の和:1337

約数の個数: 32

約数和(自身を含む): 42357600

約数和(自身を除く): 21765688

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 211, 422, 844, 1109, 1688, 2218, 2321, 4436, 4642, 8872, 9284, 12199, 18568, 24398, 48796, 97592, 233999, 467998, 935996, 1871992, 2573989, 5147978, 10295956, 20591912]

約数ペア:

[(1, 20591912), (2, 10295956), (4, 5147978), (8, 2573989), (11, 1871992), (22, 935996), (44, 467998), (88, 233999), (211, 97592), (422, 48796), (844, 24398), (1109, 18568), (1688, 12199), (2218, 9284), (2321, 8872), (4436, 4642)]