20802808

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{631}}^1$

素因数の和:967

約数の個数: 32

約数和(自身を含む): 42204960

約数和(自身を除く): 21402152

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 317, 631, 634, 1262, 1268, 2524, 2536, 4121, 5048, 8203, 8242, 16406, 16484, 32812, 32968, 65624, 200027, 400054, 800108, 1600216, 2600351, 5200702, 10401404, 20802808]

約数ペア:

[(1, 20802808), (2, 10401404), (4, 5200702), (8, 2600351), (13, 1600216), (26, 800108), (52, 400054), (104, 200027), (317, 65624), (631, 32968), (634, 32812), (1262, 16484), (1268, 16406), (2524, 8242), (2536, 8203), (4121, 5048)]