21478005

素因数分解:

$3^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2473}}^1$

素因数の和:2677

約数の個数: 24

約数和(自身を含む): 37436568

約数和(自身を除く): 15958563

約数列:

[1, 3, 5, 9, 15, 45, 193, 579, 965, 1737, 2473, 2895, 7419, 8685, 12365, 22257, 37095, 111285, 477289, 1431867, 2386445, 4295601, 7159335, 21478005]

約数ペア:

[(1, 21478005), (3, 7159335), (5, 4295601), (9, 2386445), (15, 1431867), (45, 477289), (193, 111285), (579, 37095), (965, 22257), (1737, 12365), (2473, 8685), (2895, 7419)]