21303465

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4397}}^1$

素因数の和:4441

約数の個数: 32

約数和(自身を含む): 37998720

約数和(自身を除く): 16695255

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4397, 4845, 13191, 21985, 65955, 74749, 83543, 224247, 250629, 373745, 417715, 1121235, 1253145, 1420231, 4260693, 7101155, 21303465]

約数ペア:

[(1, 21303465), (3, 7101155), (5, 4260693), (15, 1420231), (17, 1253145), (19, 1121235), (51, 417715), (57, 373745), (85, 250629), (95, 224247), (255, 83543), (285, 74749), (323, 65955), (969, 21985), (1615, 13191), (4397, 4845)]