199999998

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:330

約数の個数: 96

約数和(自身を含む): 487480032

約数和(自身を除く): 287480034

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 73, 99, 101, 137, 146, 198, 202, 219, 274, 303, 411, 438, 606, 657, 803, 822, 909, 1111, 1233, 1314, 1507, 1606, 1818, 2222, 2409, 2466, 3014, 3333, 4521, 4818, 6666, 7227, 7373, 9042, 9999, 10001, 13563, 13837, 14454, 14746, 19998, 20002, 22119, 27126, 27674, 30003, 41511, 44238, 60006, 66357, 81103, 83022, 90009, 110011, 124533, 132714, 152207, 162206, 180018, 220022, 243309, 249066, 304414, 330033, 456621, 486618, 660066, 729927, 913242, 990099, 1010101, 1369863, 1459854, 1980198, 2020202, 2739726, 3030303, 6060606, 9090909, 11111111, 18181818, 22222222, 33333333, 66666666, 99999999, 199999998]

約数ペア:

[(1, 199999998), (2, 99999999), (3, 66666666), (6, 33333333), (9, 22222222), (11, 18181818), (18, 11111111), (22, 9090909), (33, 6060606), (66, 3030303), (73, 2739726), (99, 2020202), (101, 1980198), (137, 1459854), (146, 1369863), (198, 1010101), (202, 990099), (219, 913242), (274, 729927), (303, 660066), (411, 486618), (438, 456621), (606, 330033), (657, 304414), (803, 249066), (822, 243309), (909, 220022), (1111, 180018), (1233, 162206), (1314, 152207), (1507, 132714), (1606, 124533), (1818, 110011), (2222, 90009), (2409, 83022), (2466, 81103), (3014, 66357), (3333, 60006), (4521, 44238), (4818, 41511), (6666, 30003), (7227, 27674), (7373, 27126), (9042, 22119), (9999, 20002), (10001, 19998), (13563, 14746), (13837, 14454)]