81490444

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{421}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 169394176

約数和(自身を除く): 87903732

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 223, 421, 434, 446, 842, 868, 892, 1561, 1684, 2947, 3122, 5894, 6244, 6913, 11788, 13051, 13826, 26102, 27652, 48391, 52204, 91357, 93883, 96782, 182714, 187766, 193564, 365428, 375532, 657181, 1314362, 2628724, 2910373, 5820746, 11641492, 20372611, 40745222, 81490444]

約数ペア:

[(1, 81490444), (2, 40745222), (4, 20372611), (7, 11641492), (14, 5820746), (28, 2910373), (31, 2628724), (62, 1314362), (124, 657181), (217, 375532), (223, 365428), (421, 193564), (434, 187766), (446, 182714), (842, 96782), (868, 93883), (892, 91357), (1561, 52204), (1684, 48391), (2947, 27652), (3122, 26102), (5894, 13826), (6244, 13051), (6913, 11788)]