21022455

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4339}}^1$

素因数の和:4383

約数の個数: 32

約数和(自身を含む): 37497600

約数和(自身を除く): 16475145

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4339, 4845, 13017, 21695, 65085, 73763, 82441, 221289, 247323, 368815, 412205, 1106445, 1236615, 1401497, 4204491, 7007485, 21022455]

約数ペア:

[(1, 21022455), (3, 7007485), (5, 4204491), (15, 1401497), (17, 1236615), (19, 1106445), (51, 412205), (57, 368815), (85, 247323), (95, 221289), (255, 82441), (285, 73763), (323, 65085), (969, 21695), (1615, 13017), (4339, 4845)]