21270795

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15583}}^1$

素因数の和:15611

約数の個数: 32

約数和(自身を含む): 41889792

約数和(自身を除く): 20618997

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 15583, 46749, 77915, 109081, 202579, 233745, 327243, 545405, 607737, 1012895, 1418053, 1636215, 3038685, 4254159, 7090265, 21270795]

約数ペア:

[(1, 21270795), (3, 7090265), (5, 4254159), (7, 3038685), (13, 1636215), (15, 1418053), (21, 1012895), (35, 607737), (39, 545405), (65, 327243), (91, 233745), (105, 202579), (195, 109081), (273, 77915), (455, 46749), (1365, 15583)]