18627021

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 32343168

約数和(自身を除く): 13716147

約数列:

[1, 3, 7, 9, 21, 37, 61, 63, 111, 131, 183, 259, 333, 393, 427, 549, 777, 917, 1179, 1281, 2257, 2331, 2751, 3843, 4847, 6771, 7991, 8253, 14541, 15799, 20313, 23973, 33929, 43623, 47397, 55937, 71919, 101787, 142191, 167811, 295667, 305361, 503433, 887001, 2069669, 2661003, 6209007, 18627021]

約数ペア:

[(1, 18627021), (3, 6209007), (7, 2661003), (9, 2069669), (21, 887001), (37, 503433), (61, 305361), (63, 295667), (111, 167811), (131, 142191), (183, 101787), (259, 71919), (333, 55937), (393, 47397), (427, 43623), (549, 33929), (777, 23973), (917, 20313), (1179, 15799), (1281, 14541), (2257, 8253), (2331, 7991), (2751, 6771), (3843, 4847)]