18997585

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{4217}}^1$

素因数の和:4292

約数の個数: 16

約数和(自身を含む): 24599376

約数和(自身を除く): 5601791

約数列:

[1, 5, 17, 53, 85, 265, 901, 4217, 4505, 21085, 71689, 223501, 358445, 1117505, 3799517, 18997585]

約数ペア:

[(1, 18997585), (5, 3799517), (17, 1117505), (53, 358445), (85, 223501), (265, 71689), (901, 21085), (4217, 4505)]