21195538

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 40449024

約数和(自身を除く): 19253486

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 127, 131, 182, 254, 262, 637, 889, 917, 1274, 1651, 1703, 1778, 1834, 3302, 3406, 6223, 6419, 11557, 11921, 12446, 12838, 16637, 23114, 23842, 33274, 80899, 83447, 116459, 161798, 166894, 216281, 232918, 432562, 815213, 1513967, 1630426, 3027934, 10597769, 21195538]

約数ペア:

[(1, 21195538), (2, 10597769), (7, 3027934), (13, 1630426), (14, 1513967), (26, 815213), (49, 432562), (91, 232918), (98, 216281), (127, 166894), (131, 161798), (182, 116459), (254, 83447), (262, 80899), (637, 33274), (889, 23842), (917, 23114), (1274, 16637), (1651, 12838), (1703, 12446), (1778, 11921), (1834, 11557), (3302, 6419), (3406, 6223)]