81223534

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:245

約数の個数: 64

約数和(自身を含む): 153354240

約数和(自身を除く): 72130706

約数列:

[1, 2, 7, 14, 23, 31, 46, 62, 79, 103, 158, 161, 206, 217, 322, 434, 553, 713, 721, 1106, 1426, 1442, 1817, 2369, 2449, 3193, 3634, 4738, 4898, 4991, 6386, 8137, 9982, 12719, 16274, 16583, 17143, 22351, 25438, 33166, 34286, 44702, 56327, 56959, 73439, 112654, 113918, 146878, 187151, 252247, 374302, 394289, 504494, 514073, 788578, 1028146, 1310057, 1765729, 2620114, 3531458, 5801681, 11603362, 40611767, 81223534]

約数ペア:

[(1, 81223534), (2, 40611767), (7, 11603362), (14, 5801681), (23, 3531458), (31, 2620114), (46, 1765729), (62, 1310057), (79, 1028146), (103, 788578), (158, 514073), (161, 504494), (206, 394289), (217, 374302), (322, 252247), (434, 187151), (553, 146878), (713, 113918), (721, 112654), (1106, 73439), (1426, 56959), (1442, 56327), (1817, 44702), (2369, 34286), (2449, 33166), (3193, 25438), (3634, 22351), (4738, 17143), (4898, 16583), (4991, 16274), (6386, 12719), (8137, 9982)]