12640915

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 18579456

約数和(自身を除く): 5938541

約数列:

[1, 5, 7, 23, 35, 41, 115, 161, 205, 287, 383, 805, 943, 1435, 1915, 2681, 4715, 6601, 8809, 13405, 15703, 33005, 44045, 61663, 78515, 109921, 308315, 361169, 549605, 1805845, 2528183, 12640915]

約数ペア:

[(1, 12640915), (5, 2528183), (7, 1805845), (23, 549605), (35, 361169), (41, 308315), (115, 109921), (161, 78515), (205, 61663), (287, 44045), (383, 33005), (805, 15703), (943, 13405), (1435, 8809), (1915, 6601), (2681, 4715)]