21294711

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{647}}^1$

素因数の和:732

約数の個数: 32

約数和(自身を含む): 33592320

約数和(自身を除く): 12297609

約数列:

[1, 3, 9, 23, 27, 53, 69, 159, 207, 477, 621, 647, 1219, 1431, 1941, 3657, 5823, 10971, 14881, 17469, 32913, 34291, 44643, 102873, 133929, 308619, 401787, 788693, 925857, 2366079, 7098237, 21294711]

約数ペア:

[(1, 21294711), (3, 7098237), (9, 2366079), (23, 925857), (27, 788693), (53, 401787), (69, 308619), (159, 133929), (207, 102873), (477, 44643), (621, 34291), (647, 32913), (1219, 17469), (1431, 14881), (1941, 10971), (3657, 5823)]