21996045

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28753}}^1$

素因数の和:28781

約数の個数: 24

約数和(自身を含む): 40370616

約数和(自身を除く): 18374571

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28753, 86259, 143765, 258777, 431295, 488801, 1293885, 1466403, 2444005, 4399209, 7332015, 21996045]

約数ペア:

[(1, 21996045), (3, 7332015), (5, 4399209), (9, 2444005), (15, 1466403), (17, 1293885), (45, 488801), (51, 431295), (85, 258777), (153, 143765), (255, 86259), (765, 28753)]