21784140

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1$

素因数の和:158

約数の個数: 240

約数和(自身を含む): 83426112

約数和(自身を除く): 61641972

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 27, 28, 30, 34, 35, 36, 42, 45, 51, 54, 60, 63, 68, 70, 81, 84, 85, 90, 102, 105, 108, 113, 119, 126, 135, 140, 153, 162, 170, 180, 189, 204, 210, 226, 238, 252, 255, 270, 306, 315, 324, 339, 340, 357, 378, 405, 420, 452, 459, 476, 510, 540, 565, 567, 595, 612, 630, 678, 714, 756, 765, 791, 810, 918, 945, 1017, 1020, 1071, 1130, 1134, 1190, 1260, 1356, 1377, 1428, 1530, 1582, 1620, 1695, 1785, 1836, 1890, 1921, 2034, 2142, 2260, 2268, 2295, 2373, 2380, 2754, 2835, 3051, 3060, 3164, 3213, 3390, 3570, 3780, 3842, 3955, 4068, 4284, 4590, 4746, 5085, 5355, 5508, 5670, 5763, 6102, 6426, 6780, 6885, 7119, 7140, 7684, 7910, 9153, 9180, 9492, 9605, 9639, 10170, 10710, 11340, 11526, 11865, 12204, 12852, 13447, 13770, 14238, 15255, 15820, 16065, 17289, 18306, 19210, 19278, 20340, 21357, 21420, 23052, 23730, 26894, 27540, 28476, 28815, 30510, 32130, 34578, 35595, 36612, 38420, 38556, 40341, 42714, 45765, 47460, 48195, 51867, 53788, 57630, 61020, 64071, 64260, 67235, 69156, 71190, 80682, 85428, 86445, 91530, 96390, 103734, 106785, 115260, 121023, 128142, 134470, 142380, 155601, 161364, 172890, 183060, 192780, 201705, 207468, 213570, 242046, 256284, 259335, 268940, 311202, 320355, 345780, 363069, 403410, 427140, 484092, 518670, 605115, 622404, 640710, 726138, 778005, 806820, 1037340, 1089207, 1210230, 1281420, 1452276, 1556010, 1815345, 2178414, 2420460, 3112020, 3630690, 4356828, 5446035, 7261380, 10892070, 21784140]

約数ペア:

[(1, 21784140), (2, 10892070), (3, 7261380), (4, 5446035), (5, 4356828), (6, 3630690), (7, 3112020), (9, 2420460), (10, 2178414), (12, 1815345), (14, 1556010), (15, 1452276), (17, 1281420), (18, 1210230), (20, 1089207), (21, 1037340), (27, 806820), (28, 778005), (30, 726138), (34, 640710), (35, 622404), (36, 605115), (42, 518670), (45, 484092), (51, 427140), (54, 403410), (60, 363069), (63, 345780), (68, 320355), (70, 311202), (81, 268940), (84, 259335), (85, 256284), (90, 242046), (102, 213570), (105, 207468), (108, 201705), (113, 192780), (119, 183060), (126, 172890), (135, 161364), (140, 155601), (153, 142380), (162, 134470), (170, 128142), (180, 121023), (189, 115260), (204, 106785), (210, 103734), (226, 96390), (238, 91530), (252, 86445), (255, 85428), (270, 80682), (306, 71190), (315, 69156), (324, 67235), (339, 64260), (340, 64071), (357, 61020), (378, 57630), (405, 53788), (420, 51867), (452, 48195), (459, 47460), (476, 45765), (510, 42714), (540, 40341), (565, 38556), (567, 38420), (595, 36612), (612, 35595), (630, 34578), (678, 32130), (714, 30510), (756, 28815), (765, 28476), (791, 27540), (810, 26894), (918, 23730), (945, 23052), (1017, 21420), (1020, 21357), (1071, 20340), (1130, 19278), (1134, 19210), (1190, 18306), (1260, 17289), (1356, 16065), (1377, 15820), (1428, 15255), (1530, 14238), (1582, 13770), (1620, 13447), (1695, 12852), (1785, 12204), (1836, 11865), (1890, 11526), (1921, 11340), (2034, 10710), (2142, 10170), (2260, 9639), (2268, 9605), (2295, 9492), (2373, 9180), (2380, 9153), (2754, 7910), (2835, 7684), (3051, 7140), (3060, 7119), (3164, 6885), (3213, 6780), (3390, 6426), (3570, 6102), (3780, 5763), (3842, 5670), (3955, 5508), (4068, 5355), (4284, 5085), (4590, 4746)]