21573255

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7691}}^1$

素因数の和:7727

約数の個数: 32

約数和(自身を含む): 39875328

約数和(自身を除く): 18302073

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 7691, 23073, 38455, 84601, 115365, 130747, 253803, 392241, 423005, 653735, 1269015, 1438217, 1961205, 4314651, 7191085, 21573255]

約数ペア:

[(1, 21573255), (3, 7191085), (5, 4314651), (11, 1961205), (15, 1438217), (17, 1269015), (33, 653735), (51, 423005), (55, 392241), (85, 253803), (165, 130747), (187, 115365), (255, 84601), (561, 38455), (935, 23073), (2805, 7691)]