21398856

素因数分解:

$2^3\times 3^1\times {\mathrm{53}}^1\times {\mathrm{16823}}^1$

素因数の和:16885

約数の個数: 32

約数和(自身を含む): 54509760

約数和(自身を除く): 33110904

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 53, 106, 159, 212, 318, 424, 636, 1272, 16823, 33646, 50469, 67292, 100938, 134584, 201876, 403752, 891619, 1783238, 2674857, 3566476, 5349714, 7132952, 10699428, 21398856]

約数ペア:

[(1, 21398856), (2, 10699428), (3, 7132952), (4, 5349714), (6, 3566476), (8, 2674857), (12, 1783238), (24, 891619), (53, 403752), (106, 201876), (159, 134584), (212, 100938), (318, 67292), (424, 50469), (636, 33646), (1272, 16823)]