81927040

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:304

約数の個数: 128

約数和(自身を含む): 216770400

約数和(自身を除く): 134843360

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 43, 52, 64, 65, 80, 86, 104, 128, 130, 160, 172, 208, 215, 229, 260, 320, 344, 416, 430, 458, 520, 559, 640, 688, 832, 860, 916, 1040, 1118, 1145, 1376, 1664, 1720, 1832, 2080, 2236, 2290, 2752, 2795, 2977, 3440, 3664, 4160, 4472, 4580, 5504, 5590, 5954, 6880, 7328, 8320, 8944, 9160, 9847, 11180, 11908, 13760, 14656, 14885, 17888, 18320, 19694, 22360, 23816, 27520, 29312, 29770, 35776, 36640, 39388, 44720, 47632, 49235, 59540, 71552, 73280, 78776, 89440, 95264, 98470, 119080, 128011, 146560, 157552, 178880, 190528, 196940, 238160, 256022, 315104, 357760, 381056, 393880, 476320, 512044, 630208, 640055, 787760, 952640, 1024088, 1260416, 1280110, 1575520, 1905280, 2048176, 2560220, 3151040, 4096352, 5120440, 6302080, 8192704, 10240880, 16385408, 20481760, 40963520, 81927040]

約数ペア:

[(1, 81927040), (2, 40963520), (4, 20481760), (5, 16385408), (8, 10240880), (10, 8192704), (13, 6302080), (16, 5120440), (20, 4096352), (26, 3151040), (32, 2560220), (40, 2048176), (43, 1905280), (52, 1575520), (64, 1280110), (65, 1260416), (80, 1024088), (86, 952640), (104, 787760), (128, 640055), (130, 630208), (160, 512044), (172, 476320), (208, 393880), (215, 381056), (229, 357760), (260, 315104), (320, 256022), (344, 238160), (416, 196940), (430, 190528), (458, 178880), (520, 157552), (559, 146560), (640, 128011), (688, 119080), (832, 98470), (860, 95264), (916, 89440), (1040, 78776), (1118, 73280), (1145, 71552), (1376, 59540), (1664, 49235), (1720, 47632), (1832, 44720), (2080, 39388), (2236, 36640), (2290, 35776), (2752, 29770), (2795, 29312), (2977, 27520), (3440, 23816), (3664, 22360), (4160, 19694), (4472, 18320), (4580, 17888), (5504, 14885), (5590, 14656), (5954, 13760), (6880, 11908), (7328, 11180), (8320, 9847), (8944, 9160)]