207974385

素因数分解:

$3^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9689}}^1$

素因数の和:9759

約数の個数: 40

約数和(自身を含む): 379886760

約数和(自身を除く): 171912375

約数列:

[1, 3, 5, 9, 15, 27, 45, 53, 81, 135, 159, 265, 405, 477, 795, 1431, 2385, 4293, 7155, 9689, 21465, 29067, 48445, 87201, 145335, 261603, 436005, 513517, 784809, 1308015, 1540551, 2567585, 3924045, 4621653, 7702755, 13864959, 23108265, 41594877, 69324795, 207974385]

約数ペア:

[(1, 207974385), (3, 69324795), (5, 41594877), (9, 23108265), (15, 13864959), (27, 7702755), (45, 4621653), (53, 3924045), (81, 2567585), (135, 1540551), (159, 1308015), (265, 784809), (405, 513517), (477, 436005), (795, 261603), (1431, 145335), (2385, 87201), (4293, 48445), (7155, 29067), (9689, 21465)]