15420520

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{5281}}^1$

素因数の和:5365

約数の個数: 32

約数和(自身を含む): 35178120

約数和(自身を除く): 19757600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 5281, 10562, 21124, 26405, 42248, 52810, 105620, 211240, 385513, 771026, 1542052, 1927565, 3084104, 3855130, 7710260, 15420520]

約数ペア:

[(1, 15420520), (2, 7710260), (4, 3855130), (5, 3084104), (8, 1927565), (10, 1542052), (20, 771026), (40, 385513), (73, 211240), (146, 105620), (292, 52810), (365, 42248), (584, 26405), (730, 21124), (1460, 10562), (2920, 5281)]