21931047

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{757}}^1$

素因数の和:832

約数の個数: 32

約数和(自身を含む): 34564800

約数和(自身を除く): 12633753

約数列:

[1, 3, 9, 27, 29, 37, 87, 111, 261, 333, 757, 783, 999, 1073, 2271, 3219, 6813, 9657, 20439, 21953, 28009, 28971, 65859, 84027, 197577, 252081, 592731, 756243, 812261, 2436783, 7310349, 21931047]

約数ペア:

[(1, 21931047), (3, 7310349), (9, 2436783), (27, 812261), (29, 756243), (37, 592731), (87, 252081), (111, 197577), (261, 84027), (333, 65859), (757, 28971), (783, 28009), (999, 21953), (1073, 20439), (2271, 9657), (3219, 6813)]