31505740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1619}}^1$

素因数の和:1774

約数の個数: 48

約数和(自身を含む): 76204800

約数和(自身を除く): 44699060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1619, 1946, 2780, 3238, 3892, 4865, 6476, 8095, 9730, 11333, 16190, 19460, 22666, 32380, 45332, 56665, 113330, 225041, 226660, 450082, 900164, 1125205, 1575287, 2250410, 3150574, 4500820, 6301148, 7876435, 15752870, 31505740]

約数ペア:

[(1, 31505740), (2, 15752870), (4, 7876435), (5, 6301148), (7, 4500820), (10, 3150574), (14, 2250410), (20, 1575287), (28, 1125205), (35, 900164), (70, 450082), (139, 226660), (140, 225041), (278, 113330), (556, 56665), (695, 45332), (973, 32380), (1390, 22666), (1619, 19460), (1946, 16190), (2780, 11333), (3238, 9730), (3892, 8095), (4865, 6476)]