21771711

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3511}}^1$

素因数の和:3583

約数の個数: 24

約数和(自身を含む): 34515936

約数和(自身を除く): 12744225

約数列:

[1, 3, 9, 13, 39, 53, 117, 159, 477, 689, 2067, 3511, 6201, 10533, 31599, 45643, 136929, 186083, 410787, 558249, 1674747, 2419079, 7257237, 21771711]

約数ペア:

[(1, 21771711), (3, 7257237), (9, 2419079), (13, 1674747), (39, 558249), (53, 410787), (117, 186083), (159, 136929), (477, 45643), (689, 31599), (2067, 10533), (3511, 6201)]