20282780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6299}}^1$

素因数の和:6338

約数の個数: 48

約数和(自身を含む): 50803200

約数和(自身を除く): 30520420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6299, 12598, 25196, 31495, 44093, 62990, 88186, 125980, 144877, 176372, 220465, 289754, 440930, 579508, 724385, 881860, 1014139, 1448770, 2028278, 2897540, 4056556, 5070695, 10141390, 20282780]

約数ペア:

[(1, 20282780), (2, 10141390), (4, 5070695), (5, 4056556), (7, 2897540), (10, 2028278), (14, 1448770), (20, 1014139), (23, 881860), (28, 724385), (35, 579508), (46, 440930), (70, 289754), (92, 220465), (115, 176372), (140, 144877), (161, 125980), (230, 88186), (322, 62990), (460, 44093), (644, 31495), (805, 25196), (1610, 12598), (3220, 6299)]