21000887967

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{202549}}^1$

素因数の和:202695

約数の個数: 32

約数和(自身を含む): 31500576000

約数和(自身を除く): 10499688033

約数列:

[1, 3, 17, 19, 51, 57, 107, 321, 323, 969, 1819, 2033, 5457, 6099, 34561, 103683, 202549, 607647, 3443333, 3848431, 10329999, 11545293, 21672743, 65018229, 65423327, 196269981, 368436631, 411782117, 1105309893, 1235346351, 7000295989, 21000887967]

約数ペア:

[(1, 21000887967), (3, 7000295989), (17, 1235346351), (19, 1105309893), (51, 411782117), (57, 368436631), (107, 196269981), (321, 65423327), (323, 65018229), (969, 21672743), (1819, 11545293), (2033, 10329999), (5457, 3848431), (6099, 3443333), (34561, 607647), (103683, 202549)]