81289404

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1979}}^1$

素因数の和:2159

約数の個数: 72

約数和(自身を含む): 236396160

約数和(自身を除く): 155106756

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 163, 252, 326, 489, 652, 978, 1141, 1467, 1956, 1979, 2282, 2934, 3423, 3958, 4564, 5868, 5937, 6846, 7916, 10269, 11874, 13692, 13853, 17811, 20538, 23748, 27706, 35622, 41076, 41559, 55412, 71244, 83118, 124677, 166236, 249354, 322577, 498708, 645154, 967731, 1290308, 1935462, 2258039, 2903193, 3870924, 4516078, 5806386, 6774117, 9032156, 11612772, 13548234, 20322351, 27096468, 40644702, 81289404]

約数ペア:

[(1, 81289404), (2, 40644702), (3, 27096468), (4, 20322351), (6, 13548234), (7, 11612772), (9, 9032156), (12, 6774117), (14, 5806386), (18, 4516078), (21, 3870924), (28, 2903193), (36, 2258039), (42, 1935462), (63, 1290308), (84, 967731), (126, 645154), (163, 498708), (252, 322577), (326, 249354), (489, 166236), (652, 124677), (978, 83118), (1141, 71244), (1467, 55412), (1956, 41559), (1979, 41076), (2282, 35622), (2934, 27706), (3423, 23748), (3958, 20538), (4564, 17811), (5868, 13853), (5937, 13692), (6846, 11874), (7916, 10269)]