19870770

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{491}}^1$

素因数の和:591

約数の個数: 64

約数和(自身を含む): 51010560

約数和(自身を除く): 31139790

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 71, 95, 114, 142, 190, 213, 285, 355, 426, 491, 570, 710, 982, 1065, 1349, 1473, 2130, 2455, 2698, 2946, 4047, 4910, 6745, 7365, 8094, 9329, 13490, 14730, 18658, 20235, 27987, 34861, 40470, 46645, 55974, 69722, 93290, 104583, 139935, 174305, 209166, 279870, 348610, 522915, 662359, 1045830, 1324718, 1987077, 3311795, 3974154, 6623590, 9935385, 19870770]

約数ペア:

[(1, 19870770), (2, 9935385), (3, 6623590), (5, 3974154), (6, 3311795), (10, 1987077), (15, 1324718), (19, 1045830), (30, 662359), (38, 522915), (57, 348610), (71, 279870), (95, 209166), (114, 174305), (142, 139935), (190, 104583), (213, 93290), (285, 69722), (355, 55974), (426, 46645), (491, 40470), (570, 34861), (710, 27987), (982, 20235), (1065, 18658), (1349, 14730), (1473, 13490), (2130, 9329), (2455, 8094), (2698, 7365), (2946, 6745), (4047, 4910)]