18716675240

素因数分解:

$2^3\times 5^1\times {\mathrm{743}}^1\times {\mathrm{629767}}^1$

素因数の和:630521

約数の個数: 32

約数和(自身を含む): 42169265280

約数和(自身を除く): 23452590040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 743, 1486, 2972, 3715, 5944, 7430, 14860, 29720, 629767, 1259534, 2519068, 3148835, 5038136, 6297670, 12595340, 25190680, 467916881, 935833762, 1871667524, 2339584405, 3743335048, 4679168810, 9358337620, 18716675240]

約数ペア:

[(1, 18716675240), (2, 9358337620), (4, 4679168810), (5, 3743335048), (8, 2339584405), (10, 1871667524), (20, 935833762), (40, 467916881), (743, 25190680), (1486, 12595340), (2972, 6297670), (3715, 5038136), (5944, 3148835), (7430, 2519068), (14860, 1259534), (29720, 629767)]