19620705

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{421}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 34030080

約数和(自身を除く): 14409375

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 239, 421, 717, 1195, 1263, 2105, 3107, 3585, 5473, 6315, 9321, 15535, 16419, 27365, 46605, 82095, 100619, 301857, 503095, 1308047, 1509285, 3924141, 6540235, 19620705]

約数ペア:

[(1, 19620705), (3, 6540235), (5, 3924141), (13, 1509285), (15, 1308047), (39, 503095), (65, 301857), (195, 100619), (239, 82095), (421, 46605), (717, 27365), (1195, 16419), (1263, 15535), (2105, 9321), (3107, 6315), (3585, 5473)]