18651771

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:212

約数の個数: 36

約数和(自身を含む): 29309904

約数和(自身を除く): 10658133

約数列:

[1, 3, 9, 17, 51, 71, 101, 153, 213, 289, 303, 639, 867, 909, 1207, 1717, 2601, 3621, 5151, 7171, 10863, 15453, 20519, 21513, 29189, 61557, 64539, 87567, 121907, 184671, 262701, 365721, 1097163, 2072419, 6217257, 18651771]

約数ペア:

[(1, 18651771), (3, 6217257), (9, 2072419), (17, 1097163), (51, 365721), (71, 262701), (101, 184671), (153, 121907), (213, 87567), (289, 64539), (303, 61557), (639, 29189), (867, 21513), (909, 20519), (1207, 15453), (1717, 10863), (2601, 7171), (3621, 5151)]