21621033

素因数分解:

$3^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{823}}^1$

素因数の和:978

約数の個数: 32

約数和(自身を含む): 36915200

約数和(自身を除く): 15294167

約数列:

[1, 3, 7, 9, 21, 27, 63, 139, 189, 417, 823, 973, 1251, 2469, 2919, 3753, 5761, 7407, 8757, 17283, 22221, 26271, 51849, 114397, 155547, 343191, 800779, 1029573, 2402337, 3088719, 7207011, 21621033]

約数ペア:

[(1, 21621033), (3, 7207011), (7, 3088719), (9, 2402337), (21, 1029573), (27, 800779), (63, 343191), (139, 155547), (189, 114397), (417, 51849), (823, 26271), (973, 22221), (1251, 17283), (2469, 8757), (2919, 7407), (3753, 5761)]