1981739968

素因数分解:

$2^6\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{4261}}^1$

素因数の和:4342

約数の個数: 84

約数和(自身を含む): 4358338248

約数和(自身を除く): 2376598280

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 52, 64, 86, 104, 169, 172, 208, 338, 344, 416, 559, 676, 688, 832, 1118, 1352, 1376, 2236, 2704, 2752, 4261, 4472, 5408, 7267, 8522, 8944, 10816, 14534, 17044, 17888, 29068, 34088, 35776, 55393, 58136, 68176, 110786, 116272, 136352, 183223, 221572, 232544, 272704, 366446, 443144, 465088, 720109, 732892, 886288, 1440218, 1465784, 1772576, 2381899, 2880436, 2931568, 3545152, 4763798, 5760872, 5863136, 9527596, 11521744, 11726272, 19055192, 23043488, 30964687, 38110384, 46086976, 61929374, 76220768, 123858748, 152441536, 247717496, 495434992, 990869984, 1981739968]

約数ペア:

[(1, 1981739968), (2, 990869984), (4, 495434992), (8, 247717496), (13, 152441536), (16, 123858748), (26, 76220768), (32, 61929374), (43, 46086976), (52, 38110384), (64, 30964687), (86, 23043488), (104, 19055192), (169, 11726272), (172, 11521744), (208, 9527596), (338, 5863136), (344, 5760872), (416, 4763798), (559, 3545152), (676, 2931568), (688, 2880436), (832, 2381899), (1118, 1772576), (1352, 1465784), (1376, 1440218), (2236, 886288), (2704, 732892), (2752, 720109), (4261, 465088), (4472, 443144), (5408, 366446), (7267, 272704), (8522, 232544), (8944, 221572), (10816, 183223), (14534, 136352), (17044, 116272), (17888, 110786), (29068, 68176), (34088, 58136), (35776, 55393)]