71219421

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{86959}}^1$

素因数の和:86985

約数の個数: 24

約数和(自身を含む): 126613760

約数和(自身を除く): 55394339

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 86959, 260877, 608713, 782631, 1130467, 1826139, 3391401, 5478417, 7913269, 10174203, 23739807, 71219421]

約数ペア:

[(1, 71219421), (3, 23739807), (7, 10174203), (9, 7913269), (13, 5478417), (21, 3391401), (39, 1826139), (63, 1130467), (91, 782631), (117, 608713), (273, 260877), (819, 86959)]