21870999

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{859}}^1$

素因数の和:932

約数の個数: 32

約数和(自身を含む): 34675200

約数和(自身を除く): 12804201

約数列:

[1, 3, 9, 23, 27, 41, 69, 123, 207, 369, 621, 859, 943, 1107, 2577, 2829, 7731, 8487, 19757, 23193, 25461, 35219, 59271, 105657, 177813, 316971, 533439, 810037, 950913, 2430111, 7290333, 21870999]

約数ペア:

[(1, 21870999), (3, 7290333), (9, 2430111), (23, 950913), (27, 810037), (41, 533439), (69, 316971), (123, 177813), (207, 105657), (369, 59271), (621, 35219), (859, 25461), (943, 23193), (1107, 19757), (2577, 8487), (2829, 7731)]