28540431

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:245

約数の個数: 40

約数和(自身を含む): 44692560

約数和(自身を除く): 16152129

約数列:

[1, 3, 9, 27, 37, 81, 89, 107, 111, 267, 321, 333, 801, 963, 999, 2403, 2889, 2997, 3293, 3959, 7209, 8667, 9523, 9879, 11877, 28569, 29637, 35631, 85707, 88911, 106893, 257121, 266733, 320679, 352351, 771363, 1057053, 3171159, 9513477, 28540431]

約数ペア:

[(1, 28540431), (3, 9513477), (9, 3171159), (27, 1057053), (37, 771363), (81, 352351), (89, 320679), (107, 266733), (111, 257121), (267, 106893), (321, 88911), (333, 85707), (801, 35631), (963, 29637), (999, 28569), (2403, 11877), (2889, 9879), (2997, 9523), (3293, 8667), (3959, 7209)]