20024840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{641}}^1$

素因数の和:734

約数の個数: 64

約数和(自身を含む): 49921920

約数和(自身を除く): 29897080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 641, 710, 781, 1282, 1420, 1562, 2564, 2840, 3124, 3205, 3905, 5128, 6248, 6410, 7051, 7810, 12820, 14102, 15620, 25640, 28204, 31240, 35255, 45511, 56408, 70510, 91022, 141020, 182044, 227555, 282040, 364088, 455110, 500621, 910220, 1001242, 1820440, 2002484, 2503105, 4004968, 5006210, 10012420, 20024840]

約数ペア:

[(1, 20024840), (2, 10012420), (4, 5006210), (5, 4004968), (8, 2503105), (10, 2002484), (11, 1820440), (20, 1001242), (22, 910220), (40, 500621), (44, 455110), (55, 364088), (71, 282040), (88, 227555), (110, 182044), (142, 141020), (220, 91022), (284, 70510), (355, 56408), (440, 45511), (568, 35255), (641, 31240), (710, 28204), (781, 25640), (1282, 15620), (1420, 14102), (1562, 12820), (2564, 7810), (2840, 7051), (3124, 6410), (3205, 6248), (3905, 5128)]