20395740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{17891}}^1$

素因数の和:17922

約数の個数: 48

約数和(自身を含む): 60117120

約数和(自身を除く): 39721380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 17891, 35782, 53673, 71564, 89455, 107346, 178910, 214692, 268365, 339929, 357820, 536730, 679858, 1019787, 1073460, 1359716, 1699645, 2039574, 3399290, 4079148, 5098935, 6798580, 10197870, 20395740]

約数ペア:

[(1, 20395740), (2, 10197870), (3, 6798580), (4, 5098935), (5, 4079148), (6, 3399290), (10, 2039574), (12, 1699645), (15, 1359716), (19, 1073460), (20, 1019787), (30, 679858), (38, 536730), (57, 357820), (60, 339929), (76, 268365), (95, 214692), (114, 178910), (190, 107346), (228, 89455), (285, 71564), (380, 53673), (570, 35782), (1140, 17891)]