21635880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{599}}^1$

素因数の和:663

約数の個数: 128

約数和(自身を含む): 76032000

約数和(自身を除く): 54396120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 43, 56, 60, 70, 84, 86, 105, 120, 129, 140, 168, 172, 210, 215, 258, 280, 301, 344, 420, 430, 516, 599, 602, 645, 840, 860, 903, 1032, 1198, 1204, 1290, 1505, 1720, 1797, 1806, 2396, 2408, 2580, 2995, 3010, 3594, 3612, 4193, 4515, 4792, 5160, 5990, 6020, 7188, 7224, 8386, 8985, 9030, 11980, 12040, 12579, 14376, 16772, 17970, 18060, 20965, 23960, 25158, 25757, 33544, 35940, 36120, 41930, 50316, 51514, 62895, 71880, 77271, 83860, 100632, 103028, 125790, 128785, 154542, 167720, 180299, 206056, 251580, 257570, 309084, 360598, 386355, 503160, 515140, 540897, 618168, 721196, 772710, 901495, 1030280, 1081794, 1442392, 1545420, 1802990, 2163588, 2704485, 3090840, 3605980, 4327176, 5408970, 7211960, 10817940, 21635880]

約数ペア:

[(1, 21635880), (2, 10817940), (3, 7211960), (4, 5408970), (5, 4327176), (6, 3605980), (7, 3090840), (8, 2704485), (10, 2163588), (12, 1802990), (14, 1545420), (15, 1442392), (20, 1081794), (21, 1030280), (24, 901495), (28, 772710), (30, 721196), (35, 618168), (40, 540897), (42, 515140), (43, 503160), (56, 386355), (60, 360598), (70, 309084), (84, 257570), (86, 251580), (105, 206056), (120, 180299), (129, 167720), (140, 154542), (168, 128785), (172, 125790), (210, 103028), (215, 100632), (258, 83860), (280, 77271), (301, 71880), (344, 62895), (420, 51514), (430, 50316), (516, 41930), (599, 36120), (602, 35940), (645, 33544), (840, 25757), (860, 25158), (903, 23960), (1032, 20965), (1198, 18060), (1204, 17970), (1290, 16772), (1505, 14376), (1720, 12579), (1797, 12040), (1806, 11980), (2396, 9030), (2408, 8985), (2580, 8386), (2995, 7224), (3010, 7188), (3594, 6020), (3612, 5990), (4193, 5160), (4515, 4792)]