1781390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:284

約数の個数: 32

約数和(自身を含む): 3519936

約数和(自身を除く): 1738546

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 130, 142, 193, 355, 386, 710, 923, 965, 1846, 1930, 2509, 4615, 5018, 9230, 12545, 13703, 25090, 27406, 68515, 137030, 178139, 356278, 890695, 1781390]

約数ペア:

[(1, 1781390), (2, 890695), (5, 356278), (10, 178139), (13, 137030), (26, 68515), (65, 27406), (71, 25090), (130, 13703), (142, 12545), (193, 9230), (355, 5018), (386, 4615), (710, 2509), (923, 1930), (965, 1846)]