728120

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 1663200

約数和(自身を除く): 935080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 167, 218, 334, 436, 545, 668, 835, 872, 1090, 1336, 1670, 2180, 3340, 4360, 6680, 18203, 36406, 72812, 91015, 145624, 182030, 364060, 728120]

約数ペア:

[(1, 728120), (2, 364060), (4, 182030), (5, 145624), (8, 91015), (10, 72812), (20, 36406), (40, 18203), (109, 6680), (167, 4360), (218, 3340), (334, 2180), (436, 1670), (545, 1336), (668, 1090), (835, 872)]