21000332178

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{353}}^1\times {\mathrm{472151}}^1$

素因数の和:472519

約数の個数: 48

約数和(自身を含む): 52148244096

約数和(自身を除く): 31147911918

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 353, 706, 1059, 2118, 2471, 3177, 4942, 6354, 7413, 14826, 22239, 44478, 472151, 944302, 1416453, 2832906, 3305057, 4249359, 6610114, 8498718, 9915171, 19830342, 29745513, 59491026, 166669303, 333338606, 500007909, 1000015818, 1166685121, 1500023727, 2333370242, 3000047454, 3500055363, 7000110726, 10500166089, 21000332178]

約数ペア:

[(1, 21000332178), (2, 10500166089), (3, 7000110726), (6, 3500055363), (7, 3000047454), (9, 2333370242), (14, 1500023727), (18, 1166685121), (21, 1000015818), (42, 500007909), (63, 333338606), (126, 166669303), (353, 59491026), (706, 29745513), (1059, 19830342), (2118, 9915171), (2471, 8498718), (3177, 6610114), (4942, 4249359), (6354, 3305057), (7413, 2832906), (14826, 1416453), (22239, 944302), (44478, 472151)]