21042567

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25693}}^1$

素因数の和:25719

約数の個数: 24

約数和(自身を含む): 37410464

約数和(自身を除く): 16367897

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 25693, 77079, 179851, 231237, 334009, 539553, 1002027, 1618659, 2338063, 3006081, 7014189, 21042567]

約数ペア:

[(1, 21042567), (3, 7014189), (7, 3006081), (9, 2338063), (13, 1618659), (21, 1002027), (39, 539553), (63, 334009), (91, 231237), (117, 179851), (273, 77079), (819, 25693)]