21410207

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:136

約数の個数: 48

約数和(自身を含む): 29685600

約数和(自身を除く): 8275393

約数列:

[1, 7, 13, 19, 29, 49, 61, 91, 133, 203, 247, 377, 427, 551, 637, 793, 931, 1159, 1421, 1729, 1769, 2639, 2989, 3857, 5551, 7163, 8113, 12103, 12383, 15067, 18473, 22997, 26999, 33611, 38857, 50141, 56791, 86681, 105469, 160979, 235277, 350987, 436943, 738283, 1126853, 1646939, 3058601, 21410207]

約数ペア:

[(1, 21410207), (7, 3058601), (13, 1646939), (19, 1126853), (29, 738283), (49, 436943), (61, 350987), (91, 235277), (133, 160979), (203, 105469), (247, 86681), (377, 56791), (427, 50141), (551, 38857), (637, 33611), (793, 26999), (931, 22997), (1159, 18473), (1421, 15067), (1729, 12383), (1769, 12103), (2639, 8113), (2989, 7163), (3857, 5551)]