21917805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{16057}}^1$

素因数の和:16085

約数の個数: 32

約数和(自身を含む): 43163904

約数和(自身を除く): 21246099

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 16057, 48171, 80285, 112399, 208741, 240855, 337197, 561995, 626223, 1043705, 1461187, 1685985, 3131115, 4383561, 7305935, 21917805]

約数ペア:

[(1, 21917805), (3, 7305935), (5, 4383561), (7, 3131115), (13, 1685985), (15, 1461187), (21, 1043705), (35, 626223), (39, 561995), (65, 337197), (91, 240855), (105, 208741), (195, 112399), (273, 80285), (455, 48171), (1365, 16057)]