3978065

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1249}}^1$

素因数の和:1281

約数の個数: 24

約数和(自身を含む): 5985000

約数和(自身を除く): 2006935

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 1249, 3185, 6245, 8743, 16237, 43715, 61201, 81185, 113659, 306005, 568295, 795613, 3978065]

約数ペア:

[(1, 3978065), (5, 795613), (7, 568295), (13, 306005), (35, 113659), (49, 81185), (65, 61201), (91, 43715), (245, 16237), (455, 8743), (637, 6245), (1249, 3185)]