18978880

素因数分解:

$2^6\times 5^1\times {\mathrm{127}}^1\times {\mathrm{467}}^1$

素因数の和:611

約数の個数: 56

約数和(自身を含む): 45646848

約数和(自身を除く): 26667968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 160, 254, 320, 467, 508, 635, 934, 1016, 1270, 1868, 2032, 2335, 2540, 3736, 4064, 4670, 5080, 7472, 8128, 9340, 10160, 14944, 18680, 20320, 29888, 37360, 40640, 59309, 74720, 118618, 149440, 237236, 296545, 474472, 593090, 948944, 1186180, 1897888, 2372360, 3795776, 4744720, 9489440, 18978880]

約数ペア:

[(1, 18978880), (2, 9489440), (4, 4744720), (5, 3795776), (8, 2372360), (10, 1897888), (16, 1186180), (20, 948944), (32, 593090), (40, 474472), (64, 296545), (80, 237236), (127, 149440), (160, 118618), (254, 74720), (320, 59309), (467, 40640), (508, 37360), (635, 29888), (934, 20320), (1016, 18680), (1270, 14944), (1868, 10160), (2032, 9340), (2335, 8128), (2540, 7472), (3736, 5080), (4064, 4670)]