21587535

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28219}}^1$

素因数の和:28247

約数の個数: 24

約数和(自身を含む): 39620880

約数和(自身を除く): 18033345

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28219, 84657, 141095, 253971, 423285, 479723, 1269855, 1439169, 2398615, 4317507, 7195845, 21587535]

約数ペア:

[(1, 21587535), (3, 7195845), (5, 4317507), (9, 2398615), (15, 1439169), (17, 1269855), (45, 479723), (51, 423285), (85, 253971), (153, 141095), (255, 84657), (765, 28219)]