21679335

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1667}}^1$

素因数の和:1712

約数の個数: 36

約数和(自身を含む): 39941928

約数和(自身を除く): 18262593

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 289, 765, 867, 1445, 1667, 2601, 4335, 5001, 8335, 13005, 15003, 25005, 28339, 75015, 85017, 141695, 255051, 425085, 481763, 1275255, 1445289, 2408815, 4335867, 7226445, 21679335]

約数ペア:

[(1, 21679335), (3, 7226445), (5, 4335867), (9, 2408815), (15, 1445289), (17, 1275255), (45, 481763), (51, 425085), (85, 255051), (153, 141695), (255, 85017), (289, 75015), (765, 28339), (867, 25005), (1445, 15003), (1667, 13005), (2601, 8335), (4335, 5001)]