21382695

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 39592800

約数和(自身を除く): 18210105

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 89, 95, 171, 267, 281, 285, 445, 801, 843, 855, 1335, 1405, 1691, 2529, 4005, 4215, 5073, 5339, 8455, 12645, 15219, 16017, 25009, 25365, 26695, 48051, 75027, 76095, 80085, 125045, 225081, 240255, 375135, 475171, 1125405, 1425513, 2375855, 4276539, 7127565, 21382695]

約数ペア:

[(1, 21382695), (3, 7127565), (5, 4276539), (9, 2375855), (15, 1425513), (19, 1125405), (45, 475171), (57, 375135), (89, 240255), (95, 225081), (171, 125045), (267, 80085), (281, 76095), (285, 75027), (445, 48051), (801, 26695), (843, 25365), (855, 25009), (1335, 16017), (1405, 15219), (1691, 12645), (2529, 8455), (4005, 5339), (4215, 5073)]