21889791

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{10529}}^1$

素因数の和:10556

約数の個数: 32

約数和(自身を含む): 40435200

約数和(自身を除く): 18545409

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 189, 231, 297, 693, 2079, 10529, 31587, 73703, 94761, 115819, 221109, 284283, 347457, 663327, 810733, 1042371, 1989981, 2432199, 3127113, 7296597, 21889791]

約数ペア:

[(1, 21889791), (3, 7296597), (7, 3127113), (9, 2432199), (11, 1989981), (21, 1042371), (27, 810733), (33, 663327), (63, 347457), (77, 284283), (99, 221109), (189, 115819), (231, 94761), (297, 73703), (693, 31587), (2079, 10529)]