218201985

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{877}}^1$

素因数の和:1007

約数の個数: 64

約数和(自身を含む): 413011200

約数和(自身を除く): 194809215

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 97, 135, 171, 285, 291, 485, 513, 855, 873, 877, 1455, 1843, 2565, 2619, 2631, 4365, 4385, 5529, 7893, 9215, 13095, 13155, 16587, 16663, 23679, 27645, 39465, 49761, 49989, 82935, 83315, 85069, 118395, 149967, 248805, 249945, 255207, 425345, 449901, 749835, 765621, 1276035, 1616311, 2249505, 2296863, 3828105, 4848933, 8081555, 11484315, 14546799, 24244665, 43640397, 72733995, 218201985]

約数ペア:

[(1, 218201985), (3, 72733995), (5, 43640397), (9, 24244665), (15, 14546799), (19, 11484315), (27, 8081555), (45, 4848933), (57, 3828105), (95, 2296863), (97, 2249505), (135, 1616311), (171, 1276035), (285, 765621), (291, 749835), (485, 449901), (513, 425345), (855, 255207), (873, 249945), (877, 248805), (1455, 149967), (1843, 118395), (2565, 85069), (2619, 83315), (2631, 82935), (4365, 49989), (4385, 49761), (5529, 39465), (7893, 27645), (9215, 23679), (13095, 16663), (13155, 16587)]