81378416

素因数分解:

$2^4\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4513}}^1$

素因数の和:4558

約数の個数: 60

約数和(自身を含む): 191429712

約数和(自身を除く): 110051296

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 49, 56, 92, 98, 112, 161, 184, 196, 322, 368, 392, 644, 784, 1127, 1288, 2254, 2576, 4508, 4513, 9016, 9026, 18032, 18052, 31591, 36104, 63182, 72208, 103799, 126364, 207598, 221137, 252728, 415196, 442274, 505456, 726593, 830392, 884548, 1453186, 1660784, 1769096, 2906372, 3538192, 5086151, 5812744, 10172302, 11625488, 20344604, 40689208, 81378416]

約数ペア:

[(1, 81378416), (2, 40689208), (4, 20344604), (7, 11625488), (8, 10172302), (14, 5812744), (16, 5086151), (23, 3538192), (28, 2906372), (46, 1769096), (49, 1660784), (56, 1453186), (92, 884548), (98, 830392), (112, 726593), (161, 505456), (184, 442274), (196, 415196), (322, 252728), (368, 221137), (392, 207598), (644, 126364), (784, 103799), (1127, 72208), (1288, 63182), (2254, 36104), (2576, 31591), (4508, 18052), (4513, 18032), (9016, 9026)]