21678723

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{1171}}^1$

素因数の和:1216

約数の個数: 36

約数和(自身を含む): 36474984

約数和(自身を除く): 14796261

約数列:

[1, 3, 9, 11, 17, 33, 51, 99, 121, 153, 187, 363, 561, 1089, 1171, 1683, 2057, 3513, 6171, 10539, 12881, 18513, 19907, 38643, 59721, 115929, 141691, 179163, 218977, 425073, 656931, 1275219, 1970793, 2408747, 7226241, 21678723]

約数ペア:

[(1, 21678723), (3, 7226241), (9, 2408747), (11, 1970793), (17, 1275219), (33, 656931), (51, 425073), (99, 218977), (121, 179163), (153, 141691), (187, 115929), (363, 59721), (561, 38643), (1089, 19907), (1171, 18513), (1683, 12881), (2057, 10539), (3513, 6171)]