81405856

素因数分解:

$2^5\times 7^2\times {\mathrm{193}}^1\times {\mathrm{269}}^1$

素因数の和:486

約数の個数: 72

約数和(自身を含む): 188096580

約数和(自身を除く): 106690724

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 98, 112, 193, 196, 224, 269, 386, 392, 538, 772, 784, 1076, 1351, 1544, 1568, 1883, 2152, 2702, 3088, 3766, 4304, 5404, 6176, 7532, 8608, 9457, 10808, 13181, 15064, 18914, 21616, 26362, 30128, 37828, 43232, 51917, 52724, 60256, 75656, 103834, 105448, 151312, 207668, 210896, 302624, 363419, 415336, 421792, 726838, 830672, 1453676, 1661344, 2543933, 2907352, 5087866, 5814704, 10175732, 11629408, 20351464, 40702928, 81405856]

約数ペア:

[(1, 81405856), (2, 40702928), (4, 20351464), (7, 11629408), (8, 10175732), (14, 5814704), (16, 5087866), (28, 2907352), (32, 2543933), (49, 1661344), (56, 1453676), (98, 830672), (112, 726838), (193, 421792), (196, 415336), (224, 363419), (269, 302624), (386, 210896), (392, 207668), (538, 151312), (772, 105448), (784, 103834), (1076, 75656), (1351, 60256), (1544, 52724), (1568, 51917), (1883, 43232), (2152, 37828), (2702, 30128), (3088, 26362), (3766, 21616), (4304, 18914), (5404, 15064), (6176, 13181), (7532, 10808), (8608, 9457)]