20529392

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{431}}^1$

素因数の和:681

約数の個数: 40

約数和(自身を含む): 43122240

約数和(自身を除く): 22592848

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 229, 431, 458, 862, 916, 1724, 1832, 2977, 3448, 3664, 5603, 5954, 6896, 11206, 11908, 22412, 23816, 44824, 47632, 89648, 98699, 197398, 394796, 789592, 1283087, 1579184, 2566174, 5132348, 10264696, 20529392]

約数ペア:

[(1, 20529392), (2, 10264696), (4, 5132348), (8, 2566174), (13, 1579184), (16, 1283087), (26, 789592), (52, 394796), (104, 197398), (208, 98699), (229, 89648), (431, 47632), (458, 44824), (862, 23816), (916, 22412), (1724, 11908), (1832, 11206), (2977, 6896), (3448, 5954), (3664, 5603)]