21039714

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1$

素因数の和:343

約数の個数: 48

約数和(自身を含む): 46972224

約数和(自身を除く): 25932510

約数列:

[1, 2, 3, 6, 9, 18, 71, 101, 142, 163, 202, 213, 303, 326, 426, 489, 606, 639, 909, 978, 1278, 1467, 1818, 2934, 7171, 11573, 14342, 16463, 21513, 23146, 32926, 34719, 43026, 49389, 64539, 69438, 98778, 104157, 129078, 148167, 208314, 296334, 1168873, 2337746, 3506619, 7013238, 10519857, 21039714]

約数ペア:

[(1, 21039714), (2, 10519857), (3, 7013238), (6, 3506619), (9, 2337746), (18, 1168873), (71, 296334), (101, 208314), (142, 148167), (163, 129078), (202, 104157), (213, 98778), (303, 69438), (326, 64539), (426, 49389), (489, 43026), (606, 34719), (639, 32926), (909, 23146), (978, 21513), (1278, 16463), (1467, 14342), (1818, 11573), (2934, 7171)]