21236061

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{571}}^1$

素因数の和:622

約数の個数: 48

約数和(自身を含む): 37559808

約数和(自身を除く): 16323747

約数列:

[1, 3, 7, 11, 21, 23, 33, 49, 69, 77, 147, 161, 231, 253, 483, 539, 571, 759, 1127, 1617, 1713, 1771, 3381, 3997, 5313, 6281, 11991, 12397, 13133, 18843, 27979, 37191, 39399, 43967, 83937, 91931, 131901, 144463, 275793, 307769, 433389, 643517, 923307, 1011241, 1930551, 3033723, 7078687, 21236061]

約数ペア:

[(1, 21236061), (3, 7078687), (7, 3033723), (11, 1930551), (21, 1011241), (23, 923307), (33, 643517), (49, 433389), (69, 307769), (77, 275793), (147, 144463), (161, 131901), (231, 91931), (253, 83937), (483, 43967), (539, 39399), (571, 37191), (759, 27979), (1127, 18843), (1617, 13133), (1713, 12397), (1771, 11991), (3381, 6281), (3997, 5313)]