21815280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{739}}^1$

素因数の和:799

約数の個数: 120

約数和(自身を含む): 75151440

約数和(自身を除く): 53336160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 41, 45, 48, 60, 72, 80, 82, 90, 120, 123, 144, 164, 180, 205, 240, 246, 328, 360, 369, 410, 492, 615, 656, 720, 738, 739, 820, 984, 1230, 1476, 1478, 1640, 1845, 1968, 2217, 2460, 2952, 2956, 3280, 3690, 3695, 4434, 4920, 5904, 5912, 6651, 7380, 7390, 8868, 9840, 11085, 11824, 13302, 14760, 14780, 17736, 22170, 26604, 29520, 29560, 30299, 33255, 35472, 44340, 53208, 59120, 60598, 66510, 88680, 90897, 106416, 121196, 133020, 151495, 177360, 181794, 242392, 266040, 272691, 302990, 363588, 454485, 484784, 532080, 545382, 605980, 727176, 908970, 1090764, 1211960, 1363455, 1454352, 1817940, 2181528, 2423920, 2726910, 3635880, 4363056, 5453820, 7271760, 10907640, 21815280]

約数ペア:

[(1, 21815280), (2, 10907640), (3, 7271760), (4, 5453820), (5, 4363056), (6, 3635880), (8, 2726910), (9, 2423920), (10, 2181528), (12, 1817940), (15, 1454352), (16, 1363455), (18, 1211960), (20, 1090764), (24, 908970), (30, 727176), (36, 605980), (40, 545382), (41, 532080), (45, 484784), (48, 454485), (60, 363588), (72, 302990), (80, 272691), (82, 266040), (90, 242392), (120, 181794), (123, 177360), (144, 151495), (164, 133020), (180, 121196), (205, 106416), (240, 90897), (246, 88680), (328, 66510), (360, 60598), (369, 59120), (410, 53208), (492, 44340), (615, 35472), (656, 33255), (720, 30299), (738, 29560), (739, 29520), (820, 26604), (984, 22170), (1230, 17736), (1476, 14780), (1478, 14760), (1640, 13302), (1845, 11824), (1968, 11085), (2217, 9840), (2460, 8868), (2952, 7390), (2956, 7380), (3280, 6651), (3690, 5912), (3695, 5904), (4434, 4920)]