21782915

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1951}}^1$

素因数の和:2003

約数の個数: 32

約数和(自身を含む): 33730560

約数和(自身を除く): 11947645

約数列:

[1, 5, 7, 11, 29, 35, 55, 77, 145, 203, 319, 385, 1015, 1595, 1951, 2233, 9755, 11165, 13657, 21461, 56579, 68285, 107305, 150227, 282895, 396053, 622369, 751135, 1980265, 3111845, 4356583, 21782915]

約数ペア:

[(1, 21782915), (5, 4356583), (7, 3111845), (11, 1980265), (29, 751135), (35, 622369), (55, 396053), (77, 282895), (145, 150227), (203, 107305), (319, 68285), (385, 56579), (1015, 21461), (1595, 13657), (1951, 11165), (2233, 9755)]