81551145

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 147087360

約数和(自身を除く): 65536215

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 89, 111, 127, 185, 195, 267, 381, 445, 481, 555, 635, 1157, 1335, 1443, 1651, 1905, 2405, 3293, 3471, 4699, 4953, 5785, 7215, 8255, 9879, 11303, 14097, 16465, 17355, 23495, 24765, 33909, 42809, 49395, 56515, 61087, 70485, 128427, 146939, 169545, 183261, 214045, 305435, 418211, 440817, 642135, 734695, 916305, 1254633, 2091055, 2204085, 5436743, 6273165, 16310229, 27183715, 81551145]

約数ペア:

[(1, 81551145), (3, 27183715), (5, 16310229), (13, 6273165), (15, 5436743), (37, 2204085), (39, 2091055), (65, 1254633), (89, 916305), (111, 734695), (127, 642135), (185, 440817), (195, 418211), (267, 305435), (381, 214045), (445, 183261), (481, 169545), (555, 146939), (635, 128427), (1157, 70485), (1335, 61087), (1443, 56515), (1651, 49395), (1905, 42809), (2405, 33909), (3293, 24765), (3471, 23495), (4699, 17355), (4953, 16465), (5785, 14097), (7215, 11303), (8255, 9879)]