19961019

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:141

約数の個数: 64

約数和(自身を含む): 34473600

約数和(自身を除く): 14512581

約数列:

[1, 3, 9, 13, 27, 29, 37, 39, 53, 87, 111, 117, 159, 261, 333, 351, 377, 477, 481, 689, 783, 999, 1073, 1131, 1431, 1443, 1537, 1961, 2067, 3219, 3393, 4329, 4611, 5883, 6201, 9657, 10179, 12987, 13833, 13949, 17649, 18603, 19981, 25493, 28971, 41499, 41847, 52947, 56869, 59943, 76479, 125541, 170607, 179829, 229437, 376623, 511821, 539487, 688311, 739297, 1535463, 2217891, 6653673, 19961019]

約数ペア:

[(1, 19961019), (3, 6653673), (9, 2217891), (13, 1535463), (27, 739297), (29, 688311), (37, 539487), (39, 511821), (53, 376623), (87, 229437), (111, 179829), (117, 170607), (159, 125541), (261, 76479), (333, 59943), (351, 56869), (377, 52947), (477, 41847), (481, 41499), (689, 28971), (783, 25493), (999, 19981), (1073, 18603), (1131, 17649), (1431, 13949), (1443, 13833), (1537, 12987), (1961, 10179), (2067, 9657), (3219, 6201), (3393, 5883), (4329, 4611)]