21919842

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{103}}^1\times {\mathrm{563}}^1$

素因数の和:684

約数の個数: 64

約数和(自身を含む): 56309760

約数和(自身を除く): 34389918

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 103, 126, 189, 206, 309, 378, 563, 618, 721, 927, 1126, 1442, 1689, 1854, 2163, 2781, 3378, 3941, 4326, 5067, 5562, 6489, 7882, 10134, 11823, 12978, 15201, 19467, 23646, 30402, 35469, 38934, 57989, 70938, 106407, 115978, 173967, 212814, 347934, 405923, 521901, 811846, 1043802, 1217769, 1565703, 2435538, 3131406, 3653307, 7306614, 10959921, 21919842]

約数ペア:

[(1, 21919842), (2, 10959921), (3, 7306614), (6, 3653307), (7, 3131406), (9, 2435538), (14, 1565703), (18, 1217769), (21, 1043802), (27, 811846), (42, 521901), (54, 405923), (63, 347934), (103, 212814), (126, 173967), (189, 115978), (206, 106407), (309, 70938), (378, 57989), (563, 38934), (618, 35469), (721, 30402), (927, 23646), (1126, 19467), (1442, 15201), (1689, 12978), (1854, 11823), (2163, 10134), (2781, 7882), (3378, 6489), (3941, 5562), (4326, 5067)]