1981691628

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{386747}}^1$

素因数の和:386822

約数の個数: 48

約数和(自身を含む): 5371156224

約数和(自身を除く): 3389464596

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 61, 84, 122, 183, 244, 366, 427, 732, 854, 1281, 1708, 2562, 5124, 386747, 773494, 1160241, 1546988, 2320482, 2707229, 4640964, 5414458, 8121687, 10828916, 16243374, 23591567, 32486748, 47183134, 70774701, 94366268, 141549402, 165140969, 283098804, 330281938, 495422907, 660563876, 990845814, 1981691628]

約数ペア:

[(1, 1981691628), (2, 990845814), (3, 660563876), (4, 495422907), (6, 330281938), (7, 283098804), (12, 165140969), (14, 141549402), (21, 94366268), (28, 70774701), (42, 47183134), (61, 32486748), (84, 23591567), (122, 16243374), (183, 10828916), (244, 8121687), (366, 5414458), (427, 4640964), (732, 2707229), (854, 2320482), (1281, 1546988), (1708, 1160241), (2562, 773494), (5124, 386747)]