21870783

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{349}}^1$

素因数の和:580

約数の個数: 32

約数和(自身を含む): 35616000

約数和(自身を除く): 13745217

約数列:

[1, 3, 9, 11, 27, 33, 99, 211, 297, 349, 633, 1047, 1899, 2321, 3141, 3839, 5697, 6963, 9423, 11517, 20889, 34551, 62667, 73639, 103653, 220917, 662751, 810029, 1988253, 2430087, 7290261, 21870783]

約数ペア:

[(1, 21870783), (3, 7290261), (9, 2430087), (11, 1988253), (27, 810029), (33, 662751), (99, 220917), (211, 103653), (297, 73639), (349, 62667), (633, 34551), (1047, 20889), (1899, 11517), (2321, 9423), (3141, 6963), (3839, 5697)]