21776013

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^2\times {\mathrm{137}}^1$

素因数の和:211

約数の個数: 48

約数和(自身を含む): 38463360

約数和(自身を除く): 16687347

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 137, 189, 203, 261, 411, 609, 783, 841, 959, 1233, 1827, 2523, 2877, 3699, 3973, 5481, 5887, 7569, 8631, 11919, 17661, 22707, 25893, 27811, 35757, 52983, 83433, 107271, 115217, 158949, 250299, 345651, 750897, 806519, 1036953, 2419557, 3110859, 7258671, 21776013]

約数ペア:

[(1, 21776013), (3, 7258671), (7, 3110859), (9, 2419557), (21, 1036953), (27, 806519), (29, 750897), (63, 345651), (87, 250299), (137, 158949), (189, 115217), (203, 107271), (261, 83433), (411, 52983), (609, 35757), (783, 27811), (841, 25893), (959, 22707), (1233, 17661), (1827, 11919), (2523, 8631), (2877, 7569), (3699, 5887), (3973, 5481)]