128287705

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:230

約数の個数: 64

約数和(自身を含む): 198696960

約数和(自身を除く): 70409255

約数列:

[1, 5, 7, 13, 35, 43, 65, 79, 83, 91, 215, 301, 395, 415, 455, 553, 559, 581, 1027, 1079, 1505, 2765, 2795, 2905, 3397, 3569, 3913, 5135, 5395, 6557, 7189, 7553, 16985, 17845, 19565, 23779, 24983, 32785, 35945, 37765, 44161, 45899, 46397, 85241, 118895, 124915, 220805, 229495, 231985, 281951, 309127, 324779, 426205, 596687, 1409755, 1545635, 1623895, 1973657, 2983435, 3665363, 9868285, 18326815, 25657541, 128287705]

約数ペア:

[(1, 128287705), (5, 25657541), (7, 18326815), (13, 9868285), (35, 3665363), (43, 2983435), (65, 1973657), (79, 1623895), (83, 1545635), (91, 1409755), (215, 596687), (301, 426205), (395, 324779), (415, 309127), (455, 281951), (553, 231985), (559, 229495), (581, 220805), (1027, 124915), (1079, 118895), (1505, 85241), (2765, 46397), (2795, 45899), (2905, 44161), (3397, 37765), (3569, 35945), (3913, 32785), (5135, 24983), (5395, 23779), (6557, 19565), (7189, 17845), (7553, 16985)]