19955565

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7039}}^1$

素因数の和:7063

約数の個数: 40

約数和(自身を含む): 40888320

約数和(自身を除く): 20932755

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7039, 21117, 35195, 49273, 63351, 105585, 147819, 190053, 246365, 316755, 443457, 570159, 739095, 950265, 1330371, 2217285, 2850795, 3991113, 6651855, 19955565]

約数ペア:

[(1, 19955565), (3, 6651855), (5, 3991113), (7, 2850795), (9, 2217285), (15, 1330371), (21, 950265), (27, 739095), (35, 570159), (45, 443457), (63, 316755), (81, 246365), (105, 190053), (135, 147819), (189, 105585), (315, 63351), (405, 49273), (567, 35195), (945, 21117), (2835, 7039)]