21000737079

素因数分解:

$3^4\times 7^2\times {\mathrm{67}}^1\times {\mathrm{151}}^1\times {\mathrm{523}}^1$

素因数の和:767

約数の個数: 120

約数和(自身を含む): 37354593408

約数和(自身を除く): 16353856329

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 67, 81, 147, 151, 189, 201, 441, 453, 469, 523, 567, 603, 1057, 1323, 1359, 1407, 1569, 1809, 3171, 3283, 3661, 3969, 4077, 4221, 4707, 5427, 7399, 9513, 9849, 10117, 10983, 12231, 12663, 14121, 22197, 25627, 28539, 29547, 30351, 32949, 35041, 37989, 42363, 66591, 70819, 76881, 78973, 85617, 88641, 91053, 98847, 105123, 199773, 212457, 230643, 236919, 245287, 265923, 273159, 296541, 315369, 495733, 552811, 599319, 637371, 691929, 710757, 735861, 819477, 946107, 1487199, 1658433, 1717009, 1912113, 2075787, 2132271, 2207583, 2838321, 3869677, 4461597, 4975299, 5151027, 5291191, 5736339, 6396813, 6622749, 11609031, 13384791, 14925897, 15453081, 15873573, 19868247, 34827093, 37038337, 40154373, 44777691, 46359243, 47620719, 104481279, 111115011, 139077729, 142862157, 259268359, 313443837, 333345033, 428586471, 777805077, 1000035099, 2333415231, 3000105297, 7000245693, 21000737079]

約数ペア:

[(1, 21000737079), (3, 7000245693), (7, 3000105297), (9, 2333415231), (21, 1000035099), (27, 777805077), (49, 428586471), (63, 333345033), (67, 313443837), (81, 259268359), (147, 142862157), (151, 139077729), (189, 111115011), (201, 104481279), (441, 47620719), (453, 46359243), (469, 44777691), (523, 40154373), (567, 37038337), (603, 34827093), (1057, 19868247), (1323, 15873573), (1359, 15453081), (1407, 14925897), (1569, 13384791), (1809, 11609031), (3171, 6622749), (3283, 6396813), (3661, 5736339), (3969, 5291191), (4077, 5151027), (4221, 4975299), (4707, 4461597), (5427, 3869677), (7399, 2838321), (9513, 2207583), (9849, 2132271), (10117, 2075787), (10983, 1912113), (12231, 1717009), (12663, 1658433), (14121, 1487199), (22197, 946107), (25627, 819477), (28539, 735861), (29547, 710757), (30351, 691929), (32949, 637371), (35041, 599319), (37989, 552811), (42363, 495733), (66591, 315369), (70819, 296541), (76881, 273159), (78973, 265923), (85617, 245287), (88641, 236919), (91053, 230643), (98847, 212457), (105123, 199773)]