20556080

素因数分解:

$2^4\times 5^1\times {\mathrm{263}}^1\times {\mathrm{977}}^1$

素因数の和:1253

約数の個数: 40

約数和(自身を含む): 48023712

約数和(自身を除く): 27467632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263, 526, 977, 1052, 1315, 1954, 2104, 2630, 3908, 4208, 4885, 5260, 7816, 9770, 10520, 15632, 19540, 21040, 39080, 78160, 256951, 513902, 1027804, 1284755, 2055608, 2569510, 4111216, 5139020, 10278040, 20556080]

約数ペア:

[(1, 20556080), (2, 10278040), (4, 5139020), (5, 4111216), (8, 2569510), (10, 2055608), (16, 1284755), (20, 1027804), (40, 513902), (80, 256951), (263, 78160), (526, 39080), (977, 21040), (1052, 19540), (1315, 15632), (1954, 10520), (2104, 9770), (2630, 7816), (3908, 5260), (4208, 4885)]