21349860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50833}}^1$

素因数の和:50852

約数の個数: 48

約数和(自身を含む): 68320896

約数和(自身を除く): 46971036

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50833, 101666, 152499, 203332, 254165, 304998, 355831, 508330, 609996, 711662, 762495, 1016660, 1067493, 1423324, 1524990, 1779155, 2134986, 3049980, 3558310, 4269972, 5337465, 7116620, 10674930, 21349860]

約数ペア:

[(1, 21349860), (2, 10674930), (3, 7116620), (4, 5337465), (5, 4269972), (6, 3558310), (7, 3049980), (10, 2134986), (12, 1779155), (14, 1524990), (15, 1423324), (20, 1067493), (21, 1016660), (28, 762495), (30, 711662), (35, 609996), (42, 508330), (60, 355831), (70, 304998), (84, 254165), (105, 203332), (140, 152499), (210, 101666), (420, 50833)]