19799840

素因数分解:

$2^5\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1847}}^1$

素因数の和:1929

約数の個数: 48

約数和(自身を含む): 47500992

約数和(自身を除く): 27701152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 67, 80, 134, 160, 268, 335, 536, 670, 1072, 1340, 1847, 2144, 2680, 3694, 5360, 7388, 9235, 10720, 14776, 18470, 29552, 36940, 59104, 73880, 123749, 147760, 247498, 295520, 494996, 618745, 989992, 1237490, 1979984, 2474980, 3959968, 4949960, 9899920, 19799840]

約数ペア:

[(1, 19799840), (2, 9899920), (4, 4949960), (5, 3959968), (8, 2474980), (10, 1979984), (16, 1237490), (20, 989992), (32, 618745), (40, 494996), (67, 295520), (80, 247498), (134, 147760), (160, 123749), (268, 73880), (335, 59104), (536, 36940), (670, 29552), (1072, 18470), (1340, 14776), (1847, 10720), (2144, 9235), (2680, 7388), (3694, 5360)]