21971733

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1039}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 35942400

約数和(自身を除く): 13970667

約数列:

[1, 3, 7, 19, 21, 53, 57, 133, 159, 371, 399, 1007, 1039, 1113, 3021, 3117, 7049, 7273, 19741, 21147, 21819, 55067, 59223, 138187, 165201, 385469, 414561, 1046273, 1156407, 3138819, 7323911, 21971733]

約数ペア:

[(1, 21971733), (3, 7323911), (7, 3138819), (19, 1156407), (21, 1046273), (53, 414561), (57, 385469), (133, 165201), (159, 138187), (371, 59223), (399, 55067), (1007, 21819), (1039, 21147), (1113, 19741), (3021, 7273), (3117, 7049)]