21220359

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^2$

素因数の和:247

約数の個数: 24

約数和(自身を含む): 30762240

約数和(自身を除く): 9541881

約数列:

[1, 3, 19, 47, 57, 89, 141, 267, 893, 1691, 2679, 4183, 5073, 7921, 12549, 23763, 79477, 150499, 238431, 372287, 451497, 1116861, 7073453, 21220359]

約数ペア:

[(1, 21220359), (3, 7073453), (19, 1116861), (47, 451497), (57, 372287), (89, 238431), (141, 150499), (267, 79477), (893, 23763), (1691, 12549), (2679, 7921), (4183, 5073)]