399778821

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:424

約数の個数: 80

約数和(自身を含む): 683888128

約数和(自身を除く): 284109307

約数列:

[1, 3, 9, 13, 27, 31, 37, 39, 81, 93, 111, 117, 279, 331, 333, 351, 403, 481, 837, 993, 999, 1053, 1147, 1209, 1443, 2511, 2979, 2997, 3441, 3627, 4303, 4329, 8937, 10261, 10323, 10881, 12247, 12909, 12987, 14911, 26811, 30783, 30969, 32643, 36741, 38727, 38961, 44733, 92349, 92907, 110223, 116181, 133393, 134199, 159211, 277047, 330669, 348543, 379657, 400179, 402597, 477633, 831141, 992007, 1138971, 1200537, 1207791, 1432899, 3416913, 3601611, 4298697, 4935541, 10250739, 10804833, 12896091, 14806623, 30752217, 44419869, 133259607, 399778821]

約数ペア:

[(1, 399778821), (3, 133259607), (9, 44419869), (13, 30752217), (27, 14806623), (31, 12896091), (37, 10804833), (39, 10250739), (81, 4935541), (93, 4298697), (111, 3601611), (117, 3416913), (279, 1432899), (331, 1207791), (333, 1200537), (351, 1138971), (403, 992007), (481, 831141), (837, 477633), (993, 402597), (999, 400179), (1053, 379657), (1147, 348543), (1209, 330669), (1443, 277047), (2511, 159211), (2979, 134199), (2997, 133393), (3441, 116181), (3627, 110223), (4303, 92907), (4329, 92349), (8937, 44733), (10261, 38961), (10323, 38727), (10881, 36741), (12247, 32643), (12909, 30969), (12987, 30783), (14911, 26811)]