2561985

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{197}}^1$

素因数の和:242

約数の個数: 36

約数和(自身を含む): 4741308

約数和(自身を除く): 2179323

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 197, 255, 289, 591, 765, 867, 985, 1445, 1773, 2601, 2955, 3349, 4335, 8865, 10047, 13005, 16745, 30141, 50235, 56933, 150705, 170799, 284665, 512397, 853995, 2561985]

約数ペア:

[(1, 2561985), (3, 853995), (5, 512397), (9, 284665), (15, 170799), (17, 150705), (45, 56933), (51, 50235), (85, 30141), (153, 16745), (197, 13005), (255, 10047), (289, 8865), (591, 4335), (765, 3349), (867, 2955), (985, 2601), (1445, 1773)]