21557326

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1709}}^1$

素因数の和:1788

約数の個数: 32

約数和(自身を含む): 39890880

約数和(自身を除く): 18333554

約数列:

[1, 2, 7, 14, 17, 34, 53, 106, 119, 238, 371, 742, 901, 1709, 1802, 3418, 6307, 11963, 12614, 23926, 29053, 58106, 90577, 181154, 203371, 406742, 634039, 1268078, 1539809, 3079618, 10778663, 21557326]

約数ペア:

[(1, 21557326), (2, 10778663), (7, 3079618), (14, 1539809), (17, 1268078), (34, 634039), (53, 406742), (106, 203371), (119, 181154), (238, 90577), (371, 58106), (742, 29053), (901, 23926), (1709, 12614), (1802, 11963), (3418, 6307)]