18378645

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 12034155

約数列:

[1, 3, 5, 15, 47, 131, 141, 199, 235, 393, 597, 655, 705, 995, 1965, 2985, 6157, 9353, 18471, 26069, 28059, 30785, 46765, 78207, 92355, 130345, 140295, 391035, 1225243, 3675729, 6126215, 18378645]

約数ペア:

[(1, 18378645), (3, 6126215), (5, 3675729), (15, 1225243), (47, 391035), (131, 140295), (141, 130345), (199, 92355), (235, 78207), (393, 46765), (597, 30785), (655, 28059), (705, 26069), (995, 18471), (1965, 9353), (2985, 6157)]