21969990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{811}}^1$

素因数の和:874

約数の個数: 96

約数和(自身を含む): 66882816

約数和(自身を除く): 44912826

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 43, 45, 63, 70, 86, 90, 105, 126, 129, 210, 215, 258, 301, 315, 387, 430, 602, 630, 645, 774, 811, 903, 1290, 1505, 1622, 1806, 1935, 2433, 2709, 3010, 3870, 4055, 4515, 4866, 5418, 5677, 7299, 8110, 9030, 11354, 12165, 13545, 14598, 17031, 24330, 27090, 28385, 34062, 34873, 36495, 51093, 56770, 69746, 72990, 85155, 102186, 104619, 170310, 174365, 209238, 244111, 255465, 313857, 348730, 488222, 510930, 523095, 627714, 732333, 1046190, 1220555, 1464666, 1569285, 2196999, 2441110, 3138570, 3661665, 4393998, 7323330, 10984995, 21969990]

約数ペア:

[(1, 21969990), (2, 10984995), (3, 7323330), (5, 4393998), (6, 3661665), (7, 3138570), (9, 2441110), (10, 2196999), (14, 1569285), (15, 1464666), (18, 1220555), (21, 1046190), (30, 732333), (35, 627714), (42, 523095), (43, 510930), (45, 488222), (63, 348730), (70, 313857), (86, 255465), (90, 244111), (105, 209238), (126, 174365), (129, 170310), (210, 104619), (215, 102186), (258, 85155), (301, 72990), (315, 69746), (387, 56770), (430, 51093), (602, 36495), (630, 34873), (645, 34062), (774, 28385), (811, 27090), (903, 24330), (1290, 17031), (1505, 14598), (1622, 13545), (1806, 12165), (1935, 11354), (2433, 9030), (2709, 8110), (3010, 7299), (3870, 5677), (4055, 5418), (4515, 4866)]