18644857

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 24551424

約数和(自身を除く): 5906567

約数列:

[1, 7, 11, 31, 73, 77, 107, 217, 341, 511, 749, 803, 1177, 2263, 2387, 3317, 5621, 7811, 8239, 15841, 23219, 24893, 36487, 54677, 85921, 174251, 242141, 255409, 601447, 1694987, 2663551, 18644857]

約数ペア:

[(1, 18644857), (7, 2663551), (11, 1694987), (31, 601447), (73, 255409), (77, 242141), (107, 174251), (217, 85921), (341, 54677), (511, 36487), (749, 24893), (803, 23219), (1177, 15841), (2263, 8239), (2387, 7811), (3317, 5621)]