31817656

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:260

約数の個数: 64

約数和(自身を含む): 67737600

約数和(自身を除く): 35919944

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 71, 104, 124, 139, 142, 248, 278, 284, 403, 556, 568, 806, 923, 1112, 1612, 1807, 1846, 2201, 3224, 3614, 3692, 4309, 4402, 7228, 7384, 8618, 8804, 9869, 14456, 17236, 17608, 19738, 28613, 34472, 39476, 56017, 57226, 78952, 112034, 114452, 128297, 224068, 228904, 256594, 305939, 448136, 513188, 611878, 1026376, 1223756, 2447512, 3977207, 7954414, 15908828, 31817656]

約数ペア:

[(1, 31817656), (2, 15908828), (4, 7954414), (8, 3977207), (13, 2447512), (26, 1223756), (31, 1026376), (52, 611878), (62, 513188), (71, 448136), (104, 305939), (124, 256594), (139, 228904), (142, 224068), (248, 128297), (278, 114452), (284, 112034), (403, 78952), (556, 57226), (568, 56017), (806, 39476), (923, 34472), (1112, 28613), (1612, 19738), (1807, 17608), (1846, 17236), (2201, 14456), (3224, 9869), (3614, 8804), (3692, 8618), (4309, 7384), (4402, 7228)]