21707959

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{1601}}^1$

素因数の和:1770

約数の個数: 16

約数和(自身を含む): 26913600

約数和(自身を除く): 5205641

約数列:

[1, 7, 13, 91, 149, 1043, 1601, 1937, 11207, 13559, 20813, 145691, 238549, 1669843, 3101137, 21707959]

約数ペア:

[(1, 21707959), (7, 3101137), (13, 1669843), (91, 238549), (149, 145691), (1043, 20813), (1601, 13559), (1937, 11207)]