20856640

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{9311}}^1$

素因数の和:9335

約数の個数: 56

約数和(自身を含む): 56765952

約数和(自身を除く): 35909312

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 9311, 18622, 37244, 46555, 65177, 74488, 93110, 130354, 148976, 186220, 260708, 297952, 325885, 372440, 521416, 595904, 651770, 744880, 1042832, 1303540, 1489760, 2085664, 2607080, 2979520, 4171328, 5214160, 10428320, 20856640]

約数ペア:

[(1, 20856640), (2, 10428320), (4, 5214160), (5, 4171328), (7, 2979520), (8, 2607080), (10, 2085664), (14, 1489760), (16, 1303540), (20, 1042832), (28, 744880), (32, 651770), (35, 595904), (40, 521416), (56, 372440), (64, 325885), (70, 297952), (80, 260708), (112, 186220), (140, 148976), (160, 130354), (224, 93110), (280, 74488), (320, 65177), (448, 46555), (560, 37244), (1120, 18622), (2240, 9311)]