19993095

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 38154240

約数和(自身を除く): 18161145

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 47, 69, 115, 135, 137, 141, 207, 235, 345, 411, 423, 621, 685, 705, 1035, 1081, 1233, 1269, 2055, 2115, 3105, 3151, 3243, 3699, 5405, 6165, 6345, 6439, 9453, 9729, 15755, 16215, 18495, 19317, 28359, 29187, 32195, 47265, 48645, 57951, 85077, 96585, 141795, 145935, 148097, 173853, 289755, 425385, 444291, 740485, 869265, 1332873, 2221455, 3998619, 6664365, 19993095]

約数ペア:

[(1, 19993095), (3, 6664365), (5, 3998619), (9, 2221455), (15, 1332873), (23, 869265), (27, 740485), (45, 444291), (47, 425385), (69, 289755), (115, 173853), (135, 148097), (137, 145935), (141, 141795), (207, 96585), (235, 85077), (345, 57951), (411, 48645), (423, 47265), (621, 32195), (685, 29187), (705, 28359), (1035, 19317), (1081, 18495), (1233, 16215), (1269, 15755), (2055, 9729), (2115, 9453), (3105, 6439), (3151, 6345), (3243, 6165), (3699, 5405)]