18037880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{9203}}^1$

素因数の和:9228

約数の個数: 48

約数和(自身を含む): 47216520

約数和(自身を除く): 29178640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 9203, 18406, 36812, 46015, 64421, 73624, 92030, 128842, 184060, 257684, 322105, 368120, 450947, 515368, 644210, 901894, 1288420, 1803788, 2254735, 2576840, 3607576, 4509470, 9018940, 18037880]

約数ペア:

[(1, 18037880), (2, 9018940), (4, 4509470), (5, 3607576), (7, 2576840), (8, 2254735), (10, 1803788), (14, 1288420), (20, 901894), (28, 644210), (35, 515368), (40, 450947), (49, 368120), (56, 322105), (70, 257684), (98, 184060), (140, 128842), (196, 92030), (245, 73624), (280, 64421), (392, 46015), (490, 36812), (980, 18406), (1960, 9203)]