19637440

素因数分解:

$2^6\times 5^1\times {\mathrm{109}}^1\times {\mathrm{563}}^1$

素因数の和:689

約数の個数: 56

約数和(自身を含む): 47274480

約数和(自身を除く): 27637040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 160, 218, 320, 436, 545, 563, 872, 1090, 1126, 1744, 2180, 2252, 2815, 3488, 4360, 4504, 5630, 6976, 8720, 9008, 11260, 17440, 18016, 22520, 34880, 36032, 45040, 61367, 90080, 122734, 180160, 245468, 306835, 490936, 613670, 981872, 1227340, 1963744, 2454680, 3927488, 4909360, 9818720, 19637440]

約数ペア:

[(1, 19637440), (2, 9818720), (4, 4909360), (5, 3927488), (8, 2454680), (10, 1963744), (16, 1227340), (20, 981872), (32, 613670), (40, 490936), (64, 306835), (80, 245468), (109, 180160), (160, 122734), (218, 90080), (320, 61367), (436, 45040), (545, 36032), (563, 34880), (872, 22520), (1090, 18016), (1126, 17440), (1744, 11260), (2180, 9008), (2252, 8720), (2815, 6976), (3488, 5630), (4360, 4504)]