21920280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4937}}^1$

素因数の和:4988

約数の個数: 64

約数和(自身を含む): 67551840

約数和(自身を除く): 45631560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 74, 111, 120, 148, 185, 222, 296, 370, 444, 555, 740, 888, 1110, 1480, 2220, 4440, 4937, 9874, 14811, 19748, 24685, 29622, 39496, 49370, 59244, 74055, 98740, 118488, 148110, 182669, 197480, 296220, 365338, 548007, 592440, 730676, 913345, 1096014, 1461352, 1826690, 2192028, 2740035, 3653380, 4384056, 5480070, 7306760, 10960140, 21920280]

約数ペア:

[(1, 21920280), (2, 10960140), (3, 7306760), (4, 5480070), (5, 4384056), (6, 3653380), (8, 2740035), (10, 2192028), (12, 1826690), (15, 1461352), (20, 1096014), (24, 913345), (30, 730676), (37, 592440), (40, 548007), (60, 365338), (74, 296220), (111, 197480), (120, 182669), (148, 148110), (185, 118488), (222, 98740), (296, 74055), (370, 59244), (444, 49370), (555, 39496), (740, 29622), (888, 24685), (1110, 19748), (1480, 14811), (2220, 9874), (4440, 4937)]