21508935

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{2593}}^1$

素因数の和:2687

約数の個数: 32

約数和(自身を含む): 39843840

約数和(自身を除く): 18334905

約数列:

[1, 3, 5, 7, 15, 21, 35, 79, 105, 237, 395, 553, 1185, 1659, 2593, 2765, 7779, 8295, 12965, 18151, 38895, 54453, 90755, 204847, 272265, 614541, 1024235, 1433929, 3072705, 4301787, 7169645, 21508935]

約数ペア:

[(1, 21508935), (3, 7169645), (5, 4301787), (7, 3072705), (15, 1433929), (21, 1024235), (35, 614541), (79, 272265), (105, 204847), (237, 90755), (395, 54453), (553, 38895), (1185, 18151), (1659, 12965), (2593, 8295), (2765, 7779)]