21858249

素因数分解:

$3^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{2371}}^1$

素因数の和:2820

約数の個数: 16

約数和(自身を含む): 33397760

約数和(自身を除く): 11539511

約数列:

[1, 3, 7, 21, 439, 1317, 2371, 3073, 7113, 9219, 16597, 49791, 1040869, 3122607, 7286083, 21858249]

約数ペア:

[(1, 21858249), (3, 7286083), (7, 3122607), (21, 1040869), (439, 49791), (1317, 16597), (2371, 9219), (3073, 7113)]