81187884

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{3163}}^1$

素因数の和:3227

約数の個数: 72

約数和(自身を含む): 221125632

約数和(自身を除く): 139937748

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 31, 36, 46, 62, 69, 92, 93, 124, 138, 186, 207, 276, 279, 372, 414, 558, 713, 828, 1116, 1426, 2139, 2852, 3163, 4278, 6326, 6417, 8556, 9489, 12652, 12834, 18978, 25668, 28467, 37956, 56934, 72749, 98053, 113868, 145498, 196106, 218247, 290996, 294159, 392212, 436494, 588318, 654741, 872988, 882477, 1176636, 1309482, 1764954, 2255219, 2618964, 3529908, 4510438, 6765657, 9020876, 13531314, 20296971, 27062628, 40593942, 81187884]

約数ペア:

[(1, 81187884), (2, 40593942), (3, 27062628), (4, 20296971), (6, 13531314), (9, 9020876), (12, 6765657), (18, 4510438), (23, 3529908), (31, 2618964), (36, 2255219), (46, 1764954), (62, 1309482), (69, 1176636), (92, 882477), (93, 872988), (124, 654741), (138, 588318), (186, 436494), (207, 392212), (276, 294159), (279, 290996), (372, 218247), (414, 196106), (558, 145498), (713, 113868), (828, 98053), (1116, 72749), (1426, 56934), (2139, 37956), (2852, 28467), (3163, 25668), (4278, 18978), (6326, 12834), (6417, 12652), (8556, 9489)]