18499982020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1654739}}^1$

素因数の和:1654804

約数の個数: 48

約数和(自身を含む): 42811433280

約数和(自身を除く): 24311451260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 2236, 2795, 5590, 11180, 1654739, 3309478, 6618956, 8273695, 16547390, 21511607, 33094780, 43023214, 71153777, 86046428, 107558035, 142307554, 215116070, 284615108, 355768885, 430232140, 711537770, 924999101, 1423075540, 1849998202, 3699996404, 4624995505, 9249991010, 18499982020]

約数ペア:

[(1, 18499982020), (2, 9249991010), (4, 4624995505), (5, 3699996404), (10, 1849998202), (13, 1423075540), (20, 924999101), (26, 711537770), (43, 430232140), (52, 355768885), (65, 284615108), (86, 215116070), (130, 142307554), (172, 107558035), (215, 86046428), (260, 71153777), (430, 43023214), (559, 33094780), (860, 21511607), (1118, 16547390), (2236, 8273695), (2795, 6618956), (5590, 3309478), (11180, 1654739)]