21696968

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{173}}^1\times {\mathrm{257}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 41749560

約数和(自身を除く): 20052592

約数列:

[1, 2, 4, 8, 61, 122, 173, 244, 257, 346, 488, 514, 692, 1028, 1384, 2056, 10553, 15677, 21106, 31354, 42212, 44461, 62708, 84424, 88922, 125416, 177844, 355688, 2712121, 5424242, 10848484, 21696968]

約数ペア:

[(1, 21696968), (2, 10848484), (4, 5424242), (8, 2712121), (61, 355688), (122, 177844), (173, 125416), (244, 88922), (257, 84424), (346, 62708), (488, 44461), (514, 42212), (692, 31354), (1028, 21106), (1384, 15677), (2056, 10553)]