20170291199720

素因数分解:

$2^3\times 5^1\times {\mathrm{1949}}^1\times {\mathrm{258726157}}^1$

素因数の和:258728117

約数の個数: 32

約数和(自身を含む): 45406440729000

約数和(自身を除く): 25236149529280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1949, 3898, 7796, 9745, 15592, 19490, 38980, 77960, 258726157, 517452314, 1034904628, 1293630785, 2069809256, 2587261570, 5174523140, 10349046280, 504257279993, 1008514559986, 2017029119972, 2521286399965, 4034058239944, 5042572799930, 10085145599860, 20170291199720]

約数ペア:

[(1, 20170291199720), (2, 10085145599860), (4, 5042572799930), (5, 4034058239944), (8, 2521286399965), (10, 2017029119972), (20, 1008514559986), (40, 504257279993), (1949, 10349046280), (3898, 5174523140), (7796, 2587261570), (9745, 2069809256), (15592, 1293630785), (19490, 1034904628), (38980, 517452314), (77960, 258726157)]