20214761728

素因数分解:

$2^8\times 7^1\times {\mathrm{31}}^1\times {\mathrm{363889}}^1$

素因数の和:363943

約数の個数: 72

約数和(自身を含む): 47602634240

約数和(自身を除く): 27387872512

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 217, 224, 248, 256, 434, 448, 496, 868, 896, 992, 1736, 1792, 1984, 3472, 3968, 6944, 7936, 13888, 27776, 55552, 363889, 727778, 1455556, 2547223, 2911112, 5094446, 5822224, 10188892, 11280559, 11644448, 20377784, 22561118, 23288896, 40755568, 45122236, 46577792, 78963913, 81511136, 90244472, 93155584, 157927826, 163022272, 180488944, 315855652, 326044544, 360977888, 631711304, 652089088, 721955776, 1263422608, 1443911552, 2526845216, 2887823104, 5053690432, 10107380864, 20214761728]

約数ペア:

[(1, 20214761728), (2, 10107380864), (4, 5053690432), (7, 2887823104), (8, 2526845216), (14, 1443911552), (16, 1263422608), (28, 721955776), (31, 652089088), (32, 631711304), (56, 360977888), (62, 326044544), (64, 315855652), (112, 180488944), (124, 163022272), (128, 157927826), (217, 93155584), (224, 90244472), (248, 81511136), (256, 78963913), (434, 46577792), (448, 45122236), (496, 40755568), (868, 23288896), (896, 22561118), (992, 20377784), (1736, 11644448), (1792, 11280559), (1984, 10188892), (3472, 5822224), (3968, 5094446), (6944, 2911112), (7936, 2547223), (13888, 1455556), (27776, 727778), (55552, 363889)]