21663801

素因数分解:

$3^3\times {\mathrm{449}}^1\times {\mathrm{1787}}^1$

素因数の和:2245

約数の個数: 16

約数和(自身を含む): 32184000

約数和(自身を除く): 10520199

約数列:

[1, 3, 9, 27, 449, 1347, 1787, 4041, 5361, 12123, 16083, 48249, 802363, 2407089, 7221267, 21663801]

約数ペア:

[(1, 21663801), (3, 7221267), (9, 2407089), (27, 802363), (449, 48249), (1347, 16083), (1787, 12123), (4041, 5361)]