21105602

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1249}}^1$

素因数の和:1346

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 17774398

約数列:

[1, 2, 7, 14, 17, 34, 71, 119, 142, 238, 497, 994, 1207, 1249, 2414, 2498, 8449, 8743, 16898, 17486, 21233, 42466, 88679, 148631, 177358, 297262, 620753, 1241506, 1507543, 3015086, 10552801, 21105602]

約数ペア:

[(1, 21105602), (2, 10552801), (7, 3015086), (14, 1507543), (17, 1241506), (34, 620753), (71, 297262), (119, 177358), (142, 148631), (238, 88679), (497, 42466), (994, 21233), (1207, 17486), (1249, 16898), (2414, 8743), (2498, 8449)]