19988190

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{11689}}^1$

素因数の和:11721

約数の個数: 48

約数和(自身を含む): 54709200

約数和(自身を除く): 34721010

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 30, 38, 45, 57, 90, 95, 114, 171, 190, 285, 342, 570, 855, 1710, 11689, 23378, 35067, 58445, 70134, 105201, 116890, 175335, 210402, 222091, 350670, 444182, 526005, 666273, 1052010, 1110455, 1332546, 1998819, 2220910, 3331365, 3997638, 6662730, 9994095, 19988190]

約数ペア:

[(1, 19988190), (2, 9994095), (3, 6662730), (5, 3997638), (6, 3331365), (9, 2220910), (10, 1998819), (15, 1332546), (18, 1110455), (19, 1052010), (30, 666273), (38, 526005), (45, 444182), (57, 350670), (90, 222091), (95, 210402), (114, 175335), (171, 116890), (190, 105201), (285, 70134), (342, 58445), (570, 35067), (855, 23378), (1710, 11689)]