20867823

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:224

約数の個数: 36

約数和(自身を含む): 32758128

約数和(自身を除く): 11890305

約数列:

[1, 3, 9, 17, 51, 71, 113, 153, 213, 289, 339, 639, 867, 1017, 1207, 1921, 2601, 3621, 5763, 8023, 10863, 17289, 20519, 24069, 32657, 61557, 72207, 97971, 136391, 184671, 293913, 409173, 1227519, 2318647, 6955941, 20867823]

約数ペア:

[(1, 20867823), (3, 6955941), (9, 2318647), (17, 1227519), (51, 409173), (71, 293913), (113, 184671), (153, 136391), (213, 97971), (289, 72207), (339, 61557), (639, 32657), (867, 24069), (1017, 20519), (1207, 17289), (1921, 10863), (2601, 8023), (3621, 5763)]