19942785

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 37065600

約数和(自身を除く): 17122815

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 131, 153, 199, 255, 393, 597, 655, 765, 995, 1179, 1791, 1965, 2227, 2985, 3383, 5895, 6681, 8955, 10149, 11135, 16915, 20043, 26069, 30447, 33405, 50745, 78207, 100215, 130345, 152235, 234621, 391035, 443173, 1173105, 1329519, 2215865, 3988557, 6647595, 19942785]

約数ペア:

[(1, 19942785), (3, 6647595), (5, 3988557), (9, 2215865), (15, 1329519), (17, 1173105), (45, 443173), (51, 391035), (85, 234621), (131, 152235), (153, 130345), (199, 100215), (255, 78207), (393, 50745), (597, 33405), (655, 30447), (765, 26069), (995, 20043), (1179, 16915), (1791, 11135), (1965, 10149), (2227, 8955), (2985, 6681), (3383, 5895)]