21565719

素因数分解:

$3^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{3529}}^1$

素因数の和:3639

約数の個数: 24

約数和(自身を含む): 35977760

約数和(自身を除く): 14412041

約数列:

[1, 3, 7, 9, 21, 63, 97, 291, 679, 873, 2037, 3529, 6111, 10587, 24703, 31761, 74109, 222327, 342313, 1026939, 2396191, 3080817, 7188573, 21565719]

約数ペア:

[(1, 21565719), (3, 7188573), (7, 3080817), (9, 2396191), (21, 1026939), (63, 342313), (97, 222327), (291, 74109), (679, 31761), (873, 24703), (2037, 10587), (3529, 6111)]