20814040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{3079}}^1$

素因数の和:3116

約数の個数: 48

約数和(自身を含む): 50727600

約数和(自身を除く): 29913560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 3079, 3380, 6158, 6760, 12316, 15395, 24632, 30790, 40027, 61580, 80054, 123160, 160108, 200135, 320216, 400270, 520351, 800540, 1040702, 1601080, 2081404, 2601755, 4162808, 5203510, 10407020, 20814040]

約数ペア:

[(1, 20814040), (2, 10407020), (4, 5203510), (5, 4162808), (8, 2601755), (10, 2081404), (13, 1601080), (20, 1040702), (26, 800540), (40, 520351), (52, 400270), (65, 320216), (104, 200135), (130, 160108), (169, 123160), (260, 80054), (338, 61580), (520, 40027), (676, 30790), (845, 24632), (1352, 15395), (1690, 12316), (3079, 6760), (3380, 6158)]