39897172

素因数分解:

$2^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 85494528

約数和(自身を除く): 45597356

約数列:

[1, 2, 4, 7, 14, 28, 47, 49, 61, 71, 94, 98, 122, 142, 188, 196, 244, 284, 329, 427, 497, 658, 854, 994, 1316, 1708, 1988, 2303, 2867, 2989, 3337, 3479, 4331, 4606, 5734, 5978, 6674, 6958, 8662, 9212, 11468, 11956, 13348, 13916, 17324, 20069, 23359, 30317, 40138, 46718, 60634, 80276, 93436, 121268, 140483, 163513, 203557, 212219, 280966, 327026, 407114, 424438, 561932, 654052, 814228, 848876, 1424899, 2849798, 5699596, 9974293, 19948586, 39897172]

約数ペア:

[(1, 39897172), (2, 19948586), (4, 9974293), (7, 5699596), (14, 2849798), (28, 1424899), (47, 848876), (49, 814228), (61, 654052), (71, 561932), (94, 424438), (98, 407114), (122, 327026), (142, 280966), (188, 212219), (196, 203557), (244, 163513), (284, 140483), (329, 121268), (427, 93436), (497, 80276), (658, 60634), (854, 46718), (994, 40138), (1316, 30317), (1708, 23359), (1988, 20069), (2303, 17324), (2867, 13916), (2989, 13348), (3337, 11956), (3479, 11468), (4331, 9212), (4606, 8662), (5734, 6958), (5978, 6674)]