20647480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1993}}^1$

素因数の和:2048

約数の個数: 64

約数和(自身を含む): 54555840

約数和(自身を除く): 33908360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 1993, 2072, 2590, 3986, 5180, 7972, 9965, 10360, 13951, 15944, 19930, 27902, 39860, 55804, 69755, 73741, 79720, 111608, 139510, 147482, 279020, 294964, 368705, 516187, 558040, 589928, 737410, 1032374, 1474820, 2064748, 2580935, 2949640, 4129496, 5161870, 10323740, 20647480]

約数ペア:

[(1, 20647480), (2, 10323740), (4, 5161870), (5, 4129496), (7, 2949640), (8, 2580935), (10, 2064748), (14, 1474820), (20, 1032374), (28, 737410), (35, 589928), (37, 558040), (40, 516187), (56, 368705), (70, 294964), (74, 279020), (140, 147482), (148, 139510), (185, 111608), (259, 79720), (280, 73741), (296, 69755), (370, 55804), (518, 39860), (740, 27902), (1036, 19930), (1295, 15944), (1480, 13951), (1993, 10360), (2072, 9965), (2590, 7972), (3986, 5180)]