19998454

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{359}}^1$

素因数の和:564

約数の個数: 32

約数和(自身を含む): 36080640

約数和(自身を除く): 16082186

約数列:

[1, 2, 7, 14, 23, 46, 161, 173, 322, 346, 359, 718, 1211, 2422, 2513, 3979, 5026, 7958, 8257, 16514, 27853, 55706, 57799, 62107, 115598, 124214, 434749, 869498, 1428461, 2856922, 9999227, 19998454]

約数ペア:

[(1, 19998454), (2, 9999227), (7, 2856922), (14, 1428461), (23, 869498), (46, 434749), (161, 124214), (173, 115598), (322, 62107), (346, 57799), (359, 55706), (718, 27853), (1211, 16514), (2422, 8257), (2513, 7958), (3979, 5026)]