21997998

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{241}}^1\times {\mathrm{461}}^1$

素因数の和:721

約数の個数: 48

約数和(自身を含む): 52324272

約数和(自身を除く): 30326274

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198, 241, 461, 482, 723, 922, 1383, 1446, 2169, 2651, 2766, 4149, 4338, 5071, 5302, 7953, 8298, 10142, 15213, 15906, 23859, 30426, 45639, 47718, 91278, 111101, 222202, 333303, 666606, 999909, 1222111, 1999818, 2444222, 3666333, 7332666, 10998999, 21997998]

約数ペア:

[(1, 21997998), (2, 10998999), (3, 7332666), (6, 3666333), (9, 2444222), (11, 1999818), (18, 1222111), (22, 999909), (33, 666606), (66, 333303), (99, 222202), (198, 111101), (241, 91278), (461, 47718), (482, 45639), (723, 30426), (922, 23859), (1383, 15906), (1446, 15213), (2169, 10142), (2651, 8298), (2766, 7953), (4149, 5302), (4338, 5071)]