20820084

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 50221248

約数和(自身を除く): 29401164

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 129, 157, 172, 257, 258, 314, 471, 514, 516, 628, 771, 942, 1028, 1542, 1884, 3084, 6751, 11051, 13502, 20253, 22102, 27004, 33153, 40349, 40506, 44204, 66306, 80698, 81012, 121047, 132612, 161396, 242094, 484188, 1735007, 3470014, 5205021, 6940028, 10410042, 20820084]

約数ペア:

[(1, 20820084), (2, 10410042), (3, 6940028), (4, 5205021), (6, 3470014), (12, 1735007), (43, 484188), (86, 242094), (129, 161396), (157, 132612), (172, 121047), (257, 81012), (258, 80698), (314, 66306), (471, 44204), (514, 40506), (516, 40349), (628, 33153), (771, 27004), (942, 22102), (1028, 20253), (1542, 13502), (1884, 11051), (3084, 6751)]