28259127

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 46414368

約数和(自身を除く): 18155241

約数列:

[1, 3, 9, 13, 39, 41, 43, 117, 123, 129, 137, 369, 387, 411, 533, 559, 1233, 1599, 1677, 1763, 1781, 4797, 5031, 5289, 5343, 5617, 5891, 15867, 16029, 16851, 17673, 22919, 50553, 53019, 68757, 73021, 76583, 206271, 219063, 229749, 241531, 657189, 689247, 724593, 2173779, 3139903, 9419709, 28259127]

約数ペア:

[(1, 28259127), (3, 9419709), (9, 3139903), (13, 2173779), (39, 724593), (41, 689247), (43, 657189), (117, 241531), (123, 229749), (129, 219063), (137, 206271), (369, 76583), (387, 73021), (411, 68757), (533, 53019), (559, 50553), (1233, 22919), (1599, 17673), (1677, 16851), (1763, 16029), (1781, 15867), (4797, 5891), (5031, 5617), (5289, 5343)]