21478899

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{5347}}^1$

素因数の和:5466

約数の個数: 16

約数和(自身を含む): 31146752

約数和(自身を除く): 9667853

約数列:

[1, 3, 13, 39, 103, 309, 1339, 4017, 5347, 16041, 69511, 208533, 550741, 1652223, 7159633, 21478899]

約数ペア:

[(1, 21478899), (3, 7159633), (13, 1652223), (39, 550741), (103, 208533), (309, 69511), (1339, 16041), (4017, 5347)]