18721954

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{691}}^1$

素因数の和:766

約数の個数: 32

約数和(自身を含む): 31887360

約数和(自身を除く): 13165406

約数列:

[1, 2, 19, 23, 31, 38, 46, 62, 437, 589, 691, 713, 874, 1178, 1382, 1426, 13129, 13547, 15893, 21421, 26258, 27094, 31786, 42842, 301967, 406999, 492683, 603934, 813998, 985366, 9360977, 18721954]

約数ペア:

[(1, 18721954), (2, 9360977), (19, 985366), (23, 813998), (31, 603934), (38, 492683), (46, 406999), (62, 301967), (437, 42842), (589, 31786), (691, 27094), (713, 26258), (874, 21421), (1178, 15893), (1382, 13547), (1426, 13129)]