21246813

素因数分解:

$3^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1423}}^1$

素因数の和:1518

約数の個数: 32

約数和(自身を含む): 36454400

約数和(自身を除く): 15207587

約数列:

[1, 3, 7, 9, 21, 27, 63, 79, 189, 237, 553, 711, 1423, 1659, 2133, 4269, 4977, 9961, 12807, 14931, 29883, 38421, 89649, 112417, 268947, 337251, 786919, 1011753, 2360757, 3035259, 7082271, 21246813]

約数ペア:

[(1, 21246813), (3, 7082271), (7, 3035259), (9, 2360757), (21, 1011753), (27, 786919), (63, 337251), (79, 268947), (189, 112417), (237, 89649), (553, 38421), (711, 29883), (1423, 14931), (1659, 12807), (2133, 9961), (4269, 4977)]