18749409

素因数分解:

$3^1\times 7^4\times {\mathrm{19}}^1\times {\mathrm{137}}^1$

素因数の和:187

約数の個数: 40

約数和(自身を含む): 30923040

約数和(自身を除く): 12173631

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 137, 147, 343, 399, 411, 931, 959, 1029, 2401, 2603, 2793, 2877, 6517, 6713, 7203, 7809, 18221, 19551, 20139, 45619, 46991, 54663, 127547, 136857, 140973, 328937, 382641, 892829, 986811, 2678487, 6249803, 18749409]

約数ペア:

[(1, 18749409), (3, 6249803), (7, 2678487), (19, 986811), (21, 892829), (49, 382641), (57, 328937), (133, 140973), (137, 136857), (147, 127547), (343, 54663), (399, 46991), (411, 45619), (931, 20139), (959, 19551), (1029, 18221), (2401, 7809), (2603, 7203), (2793, 6713), (2877, 6517)]