28229715

素因数分解:

$3^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1621}}^1$

素因数の和:1681

約数の個数: 40

約数和(自身を含む): 51813168

約数和(自身を除く): 23583453

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 81, 129, 135, 215, 387, 405, 645, 1161, 1621, 1935, 3483, 4863, 5805, 8105, 14589, 17415, 24315, 43767, 69703, 72945, 131301, 209109, 218835, 348515, 627327, 656505, 1045545, 1881981, 3136635, 5645943, 9409905, 28229715]

約数ペア:

[(1, 28229715), (3, 9409905), (5, 5645943), (9, 3136635), (15, 1881981), (27, 1045545), (43, 656505), (45, 627327), (81, 348515), (129, 218835), (135, 209109), (215, 131301), (387, 72945), (405, 69703), (645, 43767), (1161, 24315), (1621, 17415), (1935, 14589), (3483, 8105), (4863, 5805)]