128155480

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{74509}}^1$

素因数の和:74563

約数の個数: 32

約数和(自身を含む): 295059600

約数和(自身を除く): 166904120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 74509, 149018, 298036, 372545, 596072, 745090, 1490180, 2980360, 3203887, 6407774, 12815548, 16019435, 25631096, 32038870, 64077740, 128155480]

約数ペア:

[(1, 128155480), (2, 64077740), (4, 32038870), (5, 25631096), (8, 16019435), (10, 12815548), (20, 6407774), (40, 3203887), (43, 2980360), (86, 1490180), (172, 745090), (215, 596072), (344, 372545), (430, 298036), (860, 149018), (1720, 74509)]