39780640

素因数分解:

$2^5\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2281}}^1$

素因数の和:2405

約数の個数: 48

約数和(自身を含む): 94885560

約数和(自身を除く): 55104920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 109, 160, 218, 436, 545, 872, 1090, 1744, 2180, 2281, 3488, 4360, 4562, 8720, 9124, 11405, 17440, 18248, 22810, 36496, 45620, 72992, 91240, 182480, 248629, 364960, 497258, 994516, 1243145, 1989032, 2486290, 3978064, 4972580, 7956128, 9945160, 19890320, 39780640]

約数ペア:

[(1, 39780640), (2, 19890320), (4, 9945160), (5, 7956128), (8, 4972580), (10, 3978064), (16, 2486290), (20, 1989032), (32, 1243145), (40, 994516), (80, 497258), (109, 364960), (160, 248629), (218, 182480), (436, 91240), (545, 72992), (872, 45620), (1090, 36496), (1744, 22810), (2180, 18248), (2281, 17440), (3488, 11405), (4360, 9124), (4562, 8720)]