21801614720

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{613}}^1\times {\mathrm{911}}^1$

素因数の和:1604

約数の個数: 128

約数和(自身を含む): 53118564480

約数和(自身を除く): 31316949760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 305, 320, 488, 610, 613, 640, 911, 976, 1220, 1226, 1822, 1952, 2440, 2452, 3065, 3644, 3904, 4555, 4880, 4904, 6130, 7288, 7808, 9110, 9760, 9808, 12260, 14576, 18220, 19520, 19616, 24520, 29152, 36440, 37393, 39040, 39232, 49040, 55571, 58304, 72880, 74786, 78464, 98080, 111142, 116608, 145760, 149572, 186965, 196160, 222284, 277855, 291520, 299144, 373930, 392320, 444568, 555710, 558443, 583040, 598288, 747860, 889136, 1111420, 1116886, 1196576, 1495720, 1778272, 2222840, 2233772, 2393152, 2792215, 2991440, 3556544, 4445680, 4467544, 4786304, 5584430, 5982880, 7113088, 8891360, 8935088, 11168860, 11965760, 17782720, 17870176, 22337720, 23931520, 34065023, 35565440, 35740352, 44675440, 68130046, 71480704, 89350880, 136260092, 170325115, 178701760, 272520184, 340650230, 357403520, 545040368, 681300460, 1090080736, 1362600920, 2180161472, 2725201840, 4360322944, 5450403680, 10900807360, 21801614720]

約数ペア:

[(1, 21801614720), (2, 10900807360), (4, 5450403680), (5, 4360322944), (8, 2725201840), (10, 2180161472), (16, 1362600920), (20, 1090080736), (32, 681300460), (40, 545040368), (61, 357403520), (64, 340650230), (80, 272520184), (122, 178701760), (128, 170325115), (160, 136260092), (244, 89350880), (305, 71480704), (320, 68130046), (488, 44675440), (610, 35740352), (613, 35565440), (640, 34065023), (911, 23931520), (976, 22337720), (1220, 17870176), (1226, 17782720), (1822, 11965760), (1952, 11168860), (2440, 8935088), (2452, 8891360), (3065, 7113088), (3644, 5982880), (3904, 5584430), (4555, 4786304), (4880, 4467544), (4904, 4445680), (6130, 3556544), (7288, 2991440), (7808, 2792215), (9110, 2393152), (9760, 2233772), (9808, 2222840), (12260, 1778272), (14576, 1495720), (18220, 1196576), (19520, 1116886), (19616, 1111420), (24520, 889136), (29152, 747860), (36440, 598288), (37393, 583040), (39040, 558443), (39232, 555710), (49040, 444568), (55571, 392320), (58304, 373930), (72880, 299144), (74786, 291520), (78464, 277855), (98080, 222284), (111142, 196160), (116608, 186965), (145760, 149572)]