19900863

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{227}}^1$

素因数の和:444

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 11617857

約数列:

[1, 3, 9, 17, 27, 51, 153, 191, 227, 459, 573, 681, 1719, 2043, 3247, 3859, 5157, 6129, 9741, 11577, 29223, 34731, 43357, 87669, 104193, 130071, 390213, 737069, 1170639, 2211207, 6633621, 19900863]

約数ペア:

[(1, 19900863), (3, 6633621), (9, 2211207), (17, 1170639), (27, 737069), (51, 390213), (153, 130071), (191, 104193), (227, 87669), (459, 43357), (573, 34731), (681, 29223), (1719, 11577), (2043, 9741), (3247, 6129), (3859, 5157)]