1665520

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1$

素因数の和:313

約数の個数: 40

約数和(自身を含む): 3928320

約数和(自身を除く): 2262800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 191, 218, 382, 436, 545, 764, 872, 955, 1090, 1528, 1744, 1910, 2180, 3056, 3820, 4360, 7640, 8720, 15280, 20819, 41638, 83276, 104095, 166552, 208190, 333104, 416380, 832760, 1665520]

約数ペア:

[(1, 1665520), (2, 832760), (4, 416380), (5, 333104), (8, 208190), (10, 166552), (16, 104095), (20, 83276), (40, 41638), (80, 20819), (109, 15280), (191, 8720), (218, 7640), (382, 4360), (436, 3820), (545, 3056), (764, 2180), (872, 1910), (955, 1744), (1090, 1528)]