19911040

素因数分解:

$2^7\times 5^1\times {\mathrm{53}}^1\times {\mathrm{587}}^1$

素因数の和:659

約数の個数: 64

約数和(自身を含む): 48580560

約数和(自身を除く): 28669520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 128, 160, 212, 265, 320, 424, 530, 587, 640, 848, 1060, 1174, 1696, 2120, 2348, 2935, 3392, 4240, 4696, 5870, 6784, 8480, 9392, 11740, 16960, 18784, 23480, 31111, 33920, 37568, 46960, 62222, 75136, 93920, 124444, 155555, 187840, 248888, 311110, 375680, 497776, 622220, 995552, 1244440, 1991104, 2488880, 3982208, 4977760, 9955520, 19911040]

約数ペア:

[(1, 19911040), (2, 9955520), (4, 4977760), (5, 3982208), (8, 2488880), (10, 1991104), (16, 1244440), (20, 995552), (32, 622220), (40, 497776), (53, 375680), (64, 311110), (80, 248888), (106, 187840), (128, 155555), (160, 124444), (212, 93920), (265, 75136), (320, 62222), (424, 46960), (530, 37568), (587, 33920), (640, 31111), (848, 23480), (1060, 18784), (1174, 16960), (1696, 11740), (2120, 9392), (2348, 8480), (2935, 6784), (3392, 5870), (4240, 4696)]