21479013

素因数分解:

$3^5\times {\mathrm{157}}^1\times {\mathrm{563}}^1$

素因数の和:735

約数の個数: 24

約数和(自身を含む): 32436768

約数和(自身を除く): 10957755

約数列:

[1, 3, 9, 27, 81, 157, 243, 471, 563, 1413, 1689, 4239, 5067, 12717, 15201, 38151, 45603, 88391, 136809, 265173, 795519, 2386557, 7159671, 21479013]

約数ペア:

[(1, 21479013), (3, 7159671), (9, 2386557), (27, 795519), (81, 265173), (157, 136809), (243, 88391), (471, 45603), (563, 38151), (1413, 15201), (1689, 12717), (4239, 5067)]