21783972

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:257

約数の個数: 96

約数和(自身を含む): 61422592

約数和(自身を除く): 39638620

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 43, 74, 84, 86, 111, 129, 148, 163, 172, 222, 258, 259, 301, 326, 444, 489, 516, 518, 602, 652, 777, 903, 978, 1036, 1141, 1204, 1554, 1591, 1806, 1956, 2282, 3108, 3182, 3423, 3612, 4564, 4773, 6031, 6364, 6846, 7009, 9546, 11137, 12062, 13692, 14018, 18093, 19092, 21027, 22274, 24124, 28036, 33411, 36186, 42054, 42217, 44548, 49063, 66822, 72372, 84108, 84434, 98126, 126651, 133644, 147189, 168868, 196252, 253302, 259333, 294378, 506604, 518666, 588756, 777999, 1037332, 1555998, 1815331, 3111996, 3630662, 5445993, 7261324, 10891986, 21783972]

約数ペア:

[(1, 21783972), (2, 10891986), (3, 7261324), (4, 5445993), (6, 3630662), (7, 3111996), (12, 1815331), (14, 1555998), (21, 1037332), (28, 777999), (37, 588756), (42, 518666), (43, 506604), (74, 294378), (84, 259333), (86, 253302), (111, 196252), (129, 168868), (148, 147189), (163, 133644), (172, 126651), (222, 98126), (258, 84434), (259, 84108), (301, 72372), (326, 66822), (444, 49063), (489, 44548), (516, 42217), (518, 42054), (602, 36186), (652, 33411), (777, 28036), (903, 24124), (978, 22274), (1036, 21027), (1141, 19092), (1204, 18093), (1554, 14018), (1591, 13692), (1806, 12062), (1956, 11137), (2282, 9546), (3108, 7009), (3182, 6846), (3423, 6364), (3612, 6031), (4564, 4773)]