20877990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2687}}^1$

素因数の和:2741

約数の個数: 64

約数和(自身を含む): 58834944

約数和(自身を除く): 37956954

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 37, 42, 70, 74, 105, 111, 185, 210, 222, 259, 370, 518, 555, 777, 1110, 1295, 1554, 2590, 2687, 3885, 5374, 7770, 8061, 13435, 16122, 18809, 26870, 37618, 40305, 56427, 80610, 94045, 99419, 112854, 188090, 198838, 282135, 298257, 497095, 564270, 596514, 695933, 994190, 1391866, 1491285, 2087799, 2982570, 3479665, 4175598, 6959330, 10438995, 20877990]

約数ペア:

[(1, 20877990), (2, 10438995), (3, 6959330), (5, 4175598), (6, 3479665), (7, 2982570), (10, 2087799), (14, 1491285), (15, 1391866), (21, 994190), (30, 695933), (35, 596514), (37, 564270), (42, 497095), (70, 298257), (74, 282135), (105, 198838), (111, 188090), (185, 112854), (210, 99419), (222, 94045), (259, 80610), (370, 56427), (518, 40305), (555, 37618), (777, 26870), (1110, 18809), (1295, 16122), (1554, 13435), (2590, 8061), (2687, 7770), (3885, 5374)]