20791004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{487}}^1\times {\mathrm{821}}^1$

素因数の和:1325

約数の個数: 24

約数和(自身を含む): 39311328

約数和(自身を除く): 18520324

約数列:

[1, 2, 4, 13, 26, 52, 487, 821, 974, 1642, 1948, 3284, 6331, 10673, 12662, 21346, 25324, 42692, 399827, 799654, 1599308, 5197751, 10395502, 20791004]

約数ペア:

[(1, 20791004), (2, 10395502), (4, 5197751), (13, 1599308), (26, 799654), (52, 399827), (487, 42692), (821, 25324), (974, 21346), (1642, 12662), (1948, 10673), (3284, 6331)]