21565095

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4451}}^1$

素因数の和:4495

約数の個数: 32

約数和(自身を含む): 38465280

約数和(自身を除く): 16900185

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4451, 4845, 13353, 22255, 66765, 75667, 84569, 227001, 253707, 378335, 422845, 1135005, 1268535, 1437673, 4313019, 7188365, 21565095]

約数ペア:

[(1, 21565095), (3, 7188365), (5, 4313019), (15, 1437673), (17, 1268535), (19, 1135005), (51, 422845), (57, 378335), (85, 253707), (95, 227001), (255, 84569), (285, 75667), (323, 66765), (969, 22255), (1615, 13353), (4451, 4845)]