28249720

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{4229}}^1$

素因数の和:4407

約数の個数: 32

約数和(自身を含む): 63957600

約数和(自身を除く): 35707880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 3340, 4229, 6680, 8458, 16916, 21145, 33832, 42290, 84580, 169160, 706243, 1412486, 2824972, 3531215, 5649944, 7062430, 14124860, 28249720]

約数ペア:

[(1, 28249720), (2, 14124860), (4, 7062430), (5, 5649944), (8, 3531215), (10, 2824972), (20, 1412486), (40, 706243), (167, 169160), (334, 84580), (668, 42290), (835, 33832), (1336, 21145), (1670, 16916), (3340, 8458), (4229, 6680)]