21263741015

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{528883}}^1$

素因数の和:528959

約数の個数: 32

約数和(自身を含む): 30159081216

約数和(自身を除く): 8895340201

約数列:

[1, 5, 11, 17, 43, 55, 85, 187, 215, 473, 731, 935, 2365, 3655, 8041, 40205, 528883, 2644415, 5817713, 8991011, 22741969, 29088565, 44955055, 98901121, 113709845, 250161659, 386613473, 494505605, 1250808295, 1933067365, 4252748203, 21263741015]

約数ペア:

[(1, 21263741015), (5, 4252748203), (11, 1933067365), (17, 1250808295), (43, 494505605), (55, 386613473), (85, 250161659), (187, 113709845), (215, 98901121), (473, 44955055), (731, 29088565), (935, 22741969), (2365, 8991011), (3655, 5817713), (8041, 2644415), (40205, 528883)]