19784920

素因数分解:

$2^3\times 5^1\times {\mathrm{601}}^1\times {\mathrm{823}}^1$

素因数の和:1435

約数の個数: 32

約数和(自身を含む): 44644320

約数和(自身を除く): 24859400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 601, 823, 1202, 1646, 2404, 3005, 3292, 4115, 4808, 6010, 6584, 8230, 12020, 16460, 24040, 32920, 494623, 989246, 1978492, 2473115, 3956984, 4946230, 9892460, 19784920]

約数ペア:

[(1, 19784920), (2, 9892460), (4, 4946230), (5, 3956984), (8, 2473115), (10, 1978492), (20, 989246), (40, 494623), (601, 32920), (823, 24040), (1202, 16460), (1646, 12020), (2404, 8230), (3005, 6584), (3292, 6010), (4115, 4808)]