78143540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{233}}^1\times {\mathrm{409}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 169238160

約数和(自身を除く): 91094620

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 233, 409, 410, 466, 818, 820, 932, 1165, 1636, 2045, 2330, 4090, 4660, 8180, 9553, 16769, 19106, 33538, 38212, 47765, 67076, 83845, 95297, 95530, 167690, 190594, 191060, 335380, 381188, 476485, 952970, 1905940, 3907177, 7814354, 15628708, 19535885, 39071770, 78143540]

約数ペア:

[(1, 78143540), (2, 39071770), (4, 19535885), (5, 15628708), (10, 7814354), (20, 3907177), (41, 1905940), (82, 952970), (164, 476485), (205, 381188), (233, 335380), (409, 191060), (410, 190594), (466, 167690), (818, 95530), (820, 95297), (932, 83845), (1165, 67076), (1636, 47765), (2045, 38212), (2330, 33538), (4090, 19106), (4660, 16769), (8180, 9553)]