1621383981

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{653}}^1$

素因数の和:823

約数の個数: 64

約数和(自身を含む): 2678784000

約数和(自身を除く): 1057400019

約数列:

[1, 3, 7, 19, 21, 49, 57, 127, 133, 147, 343, 381, 399, 653, 889, 931, 1029, 1959, 2413, 2667, 2793, 4571, 6223, 6517, 7239, 12407, 13713, 16891, 18669, 19551, 31997, 37221, 43561, 50673, 82931, 86849, 95991, 118237, 130683, 223979, 248793, 260547, 354711, 580517, 607943, 671937, 827659, 1575689, 1741551, 1823829, 2482977, 4063619, 4255601, 4727067, 11029823, 12190857, 12766803, 28445333, 33089469, 77208761, 85335999, 231626283, 540461327, 1621383981]

約数ペア:

[(1, 1621383981), (3, 540461327), (7, 231626283), (19, 85335999), (21, 77208761), (49, 33089469), (57, 28445333), (127, 12766803), (133, 12190857), (147, 11029823), (343, 4727067), (381, 4255601), (399, 4063619), (653, 2482977), (889, 1823829), (931, 1741551), (1029, 1575689), (1959, 827659), (2413, 671937), (2667, 607943), (2793, 580517), (4571, 354711), (6223, 260547), (6517, 248793), (7239, 223979), (12407, 130683), (13713, 118237), (16891, 95991), (18669, 86849), (19551, 82931), (31997, 50673), (37221, 43561)]