21003696

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{311}}^1$

素因数の和:399

約数の個数: 120

約数和(自身を含む): 68400384

約数和(自身を除く): 47396688

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 67, 72, 84, 112, 126, 134, 144, 168, 201, 252, 268, 311, 336, 402, 469, 504, 536, 603, 622, 804, 933, 938, 1008, 1072, 1206, 1244, 1407, 1608, 1866, 1876, 2177, 2412, 2488, 2799, 2814, 3216, 3732, 3752, 4221, 4354, 4824, 4976, 5598, 5628, 6531, 7464, 7504, 8442, 8708, 9648, 11196, 11256, 13062, 14928, 16884, 17416, 19593, 20837, 22392, 22512, 26124, 33768, 34832, 39186, 41674, 44784, 52248, 62511, 67536, 78372, 83348, 104496, 125022, 145859, 156744, 166696, 187533, 250044, 291718, 313488, 333392, 375066, 437577, 500088, 583436, 750132, 875154, 1000176, 1166872, 1312731, 1500264, 1750308, 2333744, 2625462, 3000528, 3500616, 5250924, 7001232, 10501848, 21003696]

約数ペア:

[(1, 21003696), (2, 10501848), (3, 7001232), (4, 5250924), (6, 3500616), (7, 3000528), (8, 2625462), (9, 2333744), (12, 1750308), (14, 1500264), (16, 1312731), (18, 1166872), (21, 1000176), (24, 875154), (28, 750132), (36, 583436), (42, 500088), (48, 437577), (56, 375066), (63, 333392), (67, 313488), (72, 291718), (84, 250044), (112, 187533), (126, 166696), (134, 156744), (144, 145859), (168, 125022), (201, 104496), (252, 83348), (268, 78372), (311, 67536), (336, 62511), (402, 52248), (469, 44784), (504, 41674), (536, 39186), (603, 34832), (622, 33768), (804, 26124), (933, 22512), (938, 22392), (1008, 20837), (1072, 19593), (1206, 17416), (1244, 16884), (1407, 14928), (1608, 13062), (1866, 11256), (1876, 11196), (2177, 9648), (2412, 8708), (2488, 8442), (2799, 7504), (2814, 7464), (3216, 6531), (3732, 5628), (3752, 5598), (4221, 4976), (4354, 4824)]