3640880

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{641}}^1$

素因数の和:725

約数の個数: 40

約数和(自身を含む): 8597664

約数和(自身を除く): 4956784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 641, 710, 1136, 1282, 1420, 2564, 2840, 3205, 5128, 5680, 6410, 10256, 12820, 25640, 45511, 51280, 91022, 182044, 227555, 364088, 455110, 728176, 910220, 1820440, 3640880]

約数ペア:

[(1, 3640880), (2, 1820440), (4, 910220), (5, 728176), (8, 455110), (10, 364088), (16, 227555), (20, 182044), (40, 91022), (71, 51280), (80, 45511), (142, 25640), (284, 12820), (355, 10256), (568, 6410), (641, 5680), (710, 5128), (1136, 3205), (1282, 2840), (1420, 2564)]