21307315

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{6389}}^1$

素因数の和:6446

約数の個数: 16

約数和(自身を含む): 27604800

約数和(自身を除く): 6297485

約数列:

[1, 5, 23, 29, 115, 145, 667, 3335, 6389, 31945, 146947, 185281, 734735, 926405, 4261463, 21307315]

約数ペア:

[(1, 21307315), (5, 4261463), (23, 926405), (29, 734735), (115, 185281), (145, 146947), (667, 31945), (3335, 6389)]