20490808

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2699}}^1$

素因数の和:2791

約数の個数: 32

約数和(自身を含む): 41958000

約数和(自身を除く): 21467192

約数列:

[1, 2, 4, 8, 13, 26, 52, 73, 104, 146, 292, 584, 949, 1898, 2699, 3796, 5398, 7592, 10796, 21592, 35087, 70174, 140348, 197027, 280696, 394054, 788108, 1576216, 2561351, 5122702, 10245404, 20490808]

約数ペア:

[(1, 20490808), (2, 10245404), (4, 5122702), (8, 2561351), (13, 1576216), (26, 788108), (52, 394054), (73, 280696), (104, 197027), (146, 140348), (292, 70174), (584, 35087), (949, 21592), (1898, 10796), (2699, 7592), (3796, 5398)]