21927705

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{85991}}^1$

素因数の和:86016

約数の個数: 16

約数和(自身を含む): 37148544

約数和(自身を除く): 15220839

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 85991, 257973, 429955, 1289865, 1461847, 4385541, 7309235, 21927705]

約数ペア:

[(1, 21927705), (3, 7309235), (5, 4385541), (15, 1461847), (17, 1289865), (51, 429955), (85, 257973), (255, 85991)]