15980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1$

素因数の和:73

約数の個数: 24

約数和(自身を含む): 36288

約数和(自身を除く): 20308

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 47, 68, 85, 94, 170, 188, 235, 340, 470, 799, 940, 1598, 3196, 3995, 7990, 15980]

約数ペア:

[(1, 15980), (2, 7990), (4, 3995), (5, 3196), (10, 1598), (17, 940), (20, 799), (34, 470), (47, 340), (68, 235), (85, 188), (94, 170)]