18408521187

素因数分解:

$3^3\times 7^1\times {\mathrm{397}}^1\times {\mathrm{245339}}^1$

素因数の和:245752

約数の個数: 32

約数和(自身を含む): 31246502400

約数和(自身を除く): 12837981213

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 397, 1191, 2779, 3573, 8337, 10719, 25011, 75033, 245339, 736017, 1717373, 2208051, 5152119, 6624153, 15456357, 46369071, 97399583, 292198749, 681797081, 876596247, 2045391243, 2629788741, 6136173729, 18408521187]

約数ペア:

[(1, 18408521187), (3, 6136173729), (7, 2629788741), (9, 2045391243), (21, 876596247), (27, 681797081), (63, 292198749), (189, 97399583), (397, 46369071), (1191, 15456357), (2779, 6624153), (3573, 5152119), (8337, 2208051), (10719, 1717373), (25011, 736017), (75033, 245339)]