55408040

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{2161}}^1$

素因数の和:2813

約数の個数: 32

約数和(自身を含む): 124920360

約数和(自身を除く): 69512320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2161, 2564, 3205, 4322, 5128, 6410, 8644, 10805, 12820, 17288, 21610, 25640, 43220, 86440, 1385201, 2770402, 5540804, 6926005, 11081608, 13852010, 27704020, 55408040]

約数ペア:

[(1, 55408040), (2, 27704020), (4, 13852010), (5, 11081608), (8, 6926005), (10, 5540804), (20, 2770402), (40, 1385201), (641, 86440), (1282, 43220), (2161, 25640), (2564, 21610), (3205, 17288), (4322, 12820), (5128, 10805), (6410, 8644)]