81496870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{83}}^2$

素因数の和:206

約数の個数: 72

約数和(自身を含む): 183752496

約数和(自身を除く): 102255626

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 83, 91, 130, 166, 169, 182, 338, 415, 455, 581, 830, 845, 910, 1079, 1162, 1183, 1690, 2158, 2366, 2905, 5395, 5810, 5915, 6889, 7553, 10790, 11830, 13778, 14027, 15106, 28054, 34445, 37765, 48223, 68890, 70135, 75530, 89557, 96446, 98189, 140270, 179114, 196378, 241115, 447785, 482230, 490945, 626899, 895570, 981890, 1164241, 1253798, 2328482, 3134495, 5821205, 6268990, 8149687, 11642410, 16299374, 40748435, 81496870]

約数ペア:

[(1, 81496870), (2, 40748435), (5, 16299374), (7, 11642410), (10, 8149687), (13, 6268990), (14, 5821205), (26, 3134495), (35, 2328482), (65, 1253798), (70, 1164241), (83, 981890), (91, 895570), (130, 626899), (166, 490945), (169, 482230), (182, 447785), (338, 241115), (415, 196378), (455, 179114), (581, 140270), (830, 98189), (845, 96446), (910, 89557), (1079, 75530), (1162, 70135), (1183, 68890), (1690, 48223), (2158, 37765), (2366, 34445), (2905, 28054), (5395, 15106), (5810, 14027), (5915, 13778), (6889, 11830), (7553, 10790)]