217615923

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{16217}}^1$

素因数の和:16304

約数の個数: 32

約数和(自身を含む): 373662720

約数和(自身を除く): 156046797

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 189, 213, 497, 639, 1491, 1917, 4473, 13419, 16217, 48651, 113519, 145953, 340557, 437859, 1021671, 1151407, 3065013, 3454221, 8059849, 10362663, 24179547, 31087989, 72538641, 217615923]

約数ペア:

[(1, 217615923), (3, 72538641), (7, 31087989), (9, 24179547), (21, 10362663), (27, 8059849), (63, 3454221), (71, 3065013), (189, 1151407), (213, 1021671), (497, 437859), (639, 340557), (1491, 145953), (1917, 113519), (4473, 48651), (13419, 16217)]