205521813

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47279}}^1$

素因数の和:47318

約数の個数: 32

約数和(自身を含む): 363110400

約数和(自身を除く): 157588587

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 161, 189, 207, 483, 621, 1449, 4347, 47279, 141837, 330953, 425511, 992859, 1087417, 1276533, 2978577, 3262251, 7611919, 8935731, 9786753, 22835757, 29360259, 68507271, 205521813]

約数ペア:

[(1, 205521813), (3, 68507271), (7, 29360259), (9, 22835757), (21, 9786753), (23, 8935731), (27, 7611919), (63, 3262251), (69, 2978577), (161, 1276533), (189, 1087417), (207, 992859), (483, 425511), (621, 330953), (1449, 141837), (4347, 47279)]